The great narrators — who they were
Every hadith in these collections reached us because a named Companion heard the Prophet ﷺ, remembered it, and passed it on. Seven of them carried more than a thousand reports each — the scholars call them al-muktharun, "those who narrated much." Knowing who they were, and why some of them narrated so heavily, tells you a lot about how this knowledge survived.
Abu Hurayrah — the most prolific of all, credited with around 5,374 narrations. He accepted Islam only about four years before the Prophet ﷺ passed away, yet he out-narrated men who had known the Prophet for twenty years. The reason: he was one of the Ahl as-Suffah, the poor Companions who slept on a raised platform in the Prophet's mosque with no trade or family to pull them away, so he was present for nearly everything. He once told the Prophet ﷺ that he was hearing much but forgetting it; the Prophet had him spread out his garment, made a motion as though pouring something into it, and told him to gather it to his chest — Abu Hurayrah said he never forgot anything after that. Sahih al-Bukhari 119.
Aisha bint Abi Bakr — around 2,210 narrations, and the single most important source for the fiqh of the household: the Prophet's worship at night, his fasting, his conduct at home, matters of purity and marriage that only a wife would witness. She was a jurist in her own right, and the senior Companions sent to her with their questions. When other narrators reported something about the Prophet's private life that she knew differently, she corrected them.
Abdullah ibn Umar — around 2,630 narrations, the son of the second caliph. He was known for copying the Sunnah with almost anxious precision: where he saw the Prophet ﷺ stop, pray, or sit, he would do the same in the same spot. That obsession with exactness made his reports especially prized.
Abdullah ibn Abbas — around 1,660 narrations, and remembered as the scholar and Quran-interpreter of the ummah (turjuman al-Quran). He was a young cousin of the Prophet ﷺ, only around thirteen when the Prophet died, but he spent the decades after chasing down hadith from older Companions and teaching. The Prophet ﷺ had once prayed for him: "O Allah! Make him (Ibn `Abbas) a learned scholar in religion (Islam)" Sahih al-Bukhari 143.
Anas ibn Malik — around 2,286 narrations. His mother gave him into the Prophet's service as a boy of about ten, and he served for ten years, right up to the Prophet's death, which put him beside the Prophet ﷺ for daily life the way few others were. He said that in all that time the Prophet never once scolded him — never said "why did you do that?" or "why did you not do that?" Sahih al-Bukhari 6038, Sahih Muslim 2309.
Jabir ibn Abdullah — around 1,540 narrations. He lived long, well into the era after the Companions had scattered, and taught a study circle in Madinah that students traveled to reach. His single most valuable report is the long, detailed account of the Prophet's Farewell Hajj — the fullest description we have of how the Prophet ﷺ performed the pilgrimage. Sahih Muslim 1218.
Abu Said al-Khudri — around 1,170 narrations. He was turned away from the battle of Uhud for being too young to fight, then grew into one of the leading jurists among the Companions and a careful, much-consulted narrator.
Umar ibn al-Khattab — the second caliph, and a deliberate exception to this list. Umar narrated relatively few hadith on purpose: he was strict about transmission, wary of people reporting loosely, and would ask for corroboration before accepting a report. Yet the hadith he did carry sits at the very front of Sahih al-Bukhari — the words that open the whole collection.
إِنَّمَا الأَعْمَالُ بِالنِّيَّاتِ، وَإِنَّمَا لِكُلِّ امْرِئٍ مَا نَوَى
"The reward of deeds depends upon the intentions and every person will get the reward according to what he has intended."
Sahih al-Bukhari 1 · Sahih Muslim 1907
The other names in the chain — and how each one stands to the Prophet ﷺ
Open a hadith printed in full and you do not meet the Prophet's words first. You meet a queue of names: "Qutaybah told us, from Malik, from Nafi', from Ibn Umar, that the Messenger of Allah ﷺ said…" The same handful of names comes round again and again, page after page, and a reader meeting them for the first time reasonably assumes they were all men who sat with the Prophet ﷺ.
Almost none of them were. In a chain of four or five names, normally one man heard the Prophet ﷺ with his own ears. Everyone else in the line was born after he died. They are not witnesses; they are the road the witness's report travelled to reach the man who wrote it down. Knowing which name is which is the difference between reading a chain and merely looking at one.
One chain, read the way it should be read
This is a real hadith from this site's own library — you can open it and see the chain for yourself: Sunan Abī Dāwūd 414, graded ṣaḥīḥ. Scholars call this particular line of men silsilat adh-dhahab, "the golden chain," because of how strong each link in it was held to be.
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ
"Abdullah ibn Maslamah told us, from Malik, from Nafi', from Ibn Umar, that the Messenger of Allah ﷺ said: 'Anyone who loses his ʿAsr prayer is like a person whose family has perished and whose property has been plundered.'"
Sunan Abī Dāwūd 414 · ṣaḥīḥ
The chain is written from the collector backwards, so the last name before the Prophet ﷺ is the one man who actually stood in front of him. Read in the order the report was lived, it runs like this:
| In the order it happened | Who he was | Standing to the Prophet ﷺ |
|---|---|---|
| Ibn Umar ابن عمر | Abdullah, son of Umar ibn al-Khattab, the second caliph. Died around 73 AH. | Heard him directly. A Companion who grew up in Madinah under his eye — and his own sister Hafsah was one of the Prophet's wives, so this is a household this man could walk into. |
| Nafiʿ نافع | Ibn Umar's freed slave, who lived in his service for around thirty years. Died around 117 AH. | Never met him. Everything he carries about the Prophet ﷺ he has from Ibn Umar — but from a vantage point no visiting student could buy: he was in the house, every day, for decades. |
| Malik مالك | Malik ibn Anas, the imam of Madinah and author of the Muwattaʾ. Died 179 AH. | Never met him — born roughly a century after the Prophet ﷺ died. He is a scholar receiving the report, not a witness to it. |
| Abdullah ibn Maslamah عبد الله بن مسلمة | Al-Qaʿnabī, one of Malik's foremost students — and Abu Dawud's own teacher. | Never met him. He is simply the man who handed the report to the collector who wrote this book. |
Four names; one Companion. That shape is not unusual — it is the ordinary shape of nearly every hadith you will read.
The three kinds of name you are looking at
Once you can see the shape, the recurring names sort themselves into three groups, and each group stands in a completely different relation to the Prophet ﷺ.
| Where it sits | Who they are | Relation to the Prophet ﷺ |
|---|---|---|
| Last, nearest the Prophet | The Companions — aṣ-ṣaḥābah. Abu Hurayrah, Aisha, Ibn Abbas, Ibn Umar, Anas, Jabir, Abu Saʿid. | Direct. They saw and heard him. This is the only link in the chain where the relationship is personal. |
| The middle, and most of the length | The Successors — at-tābiʿūn — and their students. Nafiʿ, az-Zuhri, ʿUrwah, Qatadah, al-Aʿmash, Hisham ibn ʿUrwah, and the imams after them: Malik, Shuʿbah, Sufyan. | None. They never met him. Their relationship is to a Companion, or to a student of one — which is exactly the thing the chain exists to record. |
| First, nearest the collector | The collector's own teachers. Qutaybah ibn Saʿid, Abu Bakr ibn Abi Shaybah, Muhammad ibn Bashshar, Musaddad. | None, and two centuries removed. These are the men Bukhari, Muslim, Abu Dawud and the rest sat with in person. |
The Companions — the only names with a relationship to him
These are the men and women at the top of the chain: the ones the report is credited to. The section above tells you how much each of them narrated. What follows is the thing a chain never states and a reader most wants to know — who they actually were to him.
| Name | What he was to the Prophet ﷺ | How he came to hear so much |
|---|---|---|
| Abu Hurayrah أبو هريرة | No kinship at all. A poor man of the tribe of Daws in Yemen who arrived in Madinah around the year of Khaybar, roughly three or four years before the Prophet died. | He attached himself to the mosque as one of the Ahl aṣ-Ṣuffah — no trade, no family, no land to pull him away. Others were richer and had known the Prophet far longer; he was simply there more. |
| Aisha bint Abi Bakr عائشة | His wife, and daughter of Abu Bakr, his closest friend and first successor. Titled Umm al-Muʾminīn, Mother of the Believers. | She witnessed what no one outside the house could: his night prayer, his fasting, his conduct at home, and the whole fiqh of purity and marriage. She outlived him by some fifty years and taught throughout them. |
| Abdullah ibn Umar ابن عمر | Son of the second caliph, and brother of Hafsah, one of the Prophet's wives — so a young man with standing access to the household. | He was a boy in Madinah for the whole Madinan period and lived some sixty years after, copying what he had seen with famous exactness — stopping where the Prophet stopped, sitting where he sat. |
| Abdullah ibn Abbas ابن عباس | His first cousin — son of al-ʿAbbas ibn ʿAbd al-Muttalib, the Prophet's paternal uncle. | Only around thirteen when the Prophet died, so most of what he carries he gathered afterwards, spending decades questioning older Companions. He became the Qur'an interpreter of the ummah, turjumān al-Qurʾān. |
| Anas ibn Malik أنس بن مالك | His household servant, given into his service by his mother as a boy of about ten, from the Ansar of Madinah. | Ten unbroken years at close quarters, through ordinary days rather than public occasions — which is why so much of the everyday Sunnah comes through him. He lived to around 93 AH, among the last Companions in Basra. |
| Jabir ibn Abdullah جابر بن عبد الله | A young Ansari of Madinah, of Banu Salamah. His father was killed at Uhud, leaving him to raise his sisters. | He lived long and taught a circle in the Prophet's own mosque that students travelled to reach. His account of the Farewell Hajj is the fullest description we have of how the Prophet performed the pilgrimage. |
| Abu Saʿid al-Khudri أبو سعيد الخدري | An Ansari of Madinah, turned back from fighting at Uhud for being too young. | He grew into one of the leading jurists among the Companions and was consulted for decades, which is how a man who was a boy at Uhud ends up carrying so much. |
The middle names — the men who never met him
These are the names that puzzle a new reader most, because they appear more often than the Companions do and yet no biography of the Prophet ﷺ mentions them. They are the generation after, and the generation after that. Several of them reached the Companions through their own families.
| Name | Who he was | How he reaches the Prophet ﷺ |
|---|---|---|
| Nafiʿ نافع | Freed slave of Ibn Umar; died around 117 AH. The chains themselves say so — one calls him plainly نَافِعًا مَوْلَى عَبْدِ اللَّهِ بْنِ عُمَرَ, "Nafiʿ, the freed slave of Abdullah ibn Umar" (Sunan Abī Dāwūd 1827). | Through Ibn Umar, and essentially only through him — thirty years inside one Companion's household. |
| Ibn Shihab az-Zuhri ابن شهاب الزهري | Muhammad ibn Muslim ibn Shihab, of Quraysh in Madinah; died 124 AH. The single most frequent middle name in the chains. | He caught the tail of the first generation — junior Companions such as Anas ibn Malik — and took the rest from the great Successors. He is the man most associated with gathering hadith into an organised body of knowledge. |
| ʿUrwah ibn az-Zubayr عروة بن الزبير | Son of az-Zubayr ibn al-ʿAwwam and of Asmaʾ bint Abi Bakr; died around 94 AH. | Aisha's nephew. Asmaʾ was her sister — so the enormous body of household reports from Aisha largely reaches us through a boy of her own family who could ask her anything. |
| Hisham ibn ʿUrwah هشام بن عروة | ʿUrwah's son; died around 146 AH. | Through his father, to his great-aunt Aisha. Chains reading Hisham → his father ʿUrwah → Aisha are common — three generations of one family carrying one woman's testimony. |
| Salim ibn Abdullah سالم بن عبد الله | Ibn Umar's own son; died around 106 AH. | Through his father. Beside Nafiʿ the servant, this is the household's other route out — the son and the freed slave, carrying the same man's memory. |
| Qatadah قتادة | Qatadah ibn Diʿamah of Basra, blind from birth and famous for the strength of his memory; died around 117 AH. | Through Anas ibn Malik and other Companions who had settled in Basra in old age. |
| Al-Aʿmash الأعمش | Sulayman ibn Mihran of Kufa; died around 148 AH. | Through the Kufan Successors, back to Companions such as Ibn Masʿud who had taught in that city. |
| ʿIkrimah عكرمة | Freed slave of Ibn Abbas; died around 105 AH. | Through Ibn Abbas — the same servant-of-the-household pattern as Nafiʿ, on the other great scholar of the family. |
| Malik, Shuʿbah, Sufyan مالك · شعبة · سفيان | The imams of the generation after: Malik ibn Anas of Madinah (d. 179 AH), Shuʿbah ibn al-Hajjaj of Basra (d. 160 AH), and Sufyan — of whom there are two, below. | None directly. By their time the Prophet ﷺ had been gone a century and a half; they are receiving, sifting and teaching what the Successors carried. |
Two traps in reading the names
One man can wear several names. Ibn Shihab and az-Zuhri are not two narrators — they are the same man, Muhammad ibn Muslim ibn Shihab az-Zuhri, and chains in this site's library spell him out in full as مُحَمَّدُ بْنُ مُسْلِمِ بْنِ شِهَابٍ (Sunan Abī Dāwūd 2272). The same goes for Anas and Anas ibn Malik, or Jabir and Jabir ibn Abdullah. Counting them as separate people badly misreads how concentrated the transmission actually is.
And one name can hide several men. A chain that says only Sufyan has not told you whether it means Sufyan ath-Thawri of Kufa (d. 161 AH) or Sufyan ibn ʿUyaynah of Makkah (d. 198 AH) — two different scholars of two different cities. A bare Abdullah, Yahya, Hammad or Ibrahim is worse. This is a recognised problem with its own name, al-muhmal — "the unspecified" — and resolving it is part of why the science of narrator-criticism, ʿilm ar-rijāl, had to be built at all.
The frequencies quoted in this section were counted directly from the chains in this site's own hadith library: 19,199 chains across the four Sunan — Abū Dāwūd, at-Tirmidhī, an-Nasāʾī and Ibn Mājah — each one carrying its full Arabic isnād. Nothing here is estimated.
They are not counts from the two Ṣaḥīḥs. This site holds Bukhari and Muslim as text without chain-level data, so no chain frequency claim about those two collections can honestly be made from it. (What Bukhari and Muslim do carry here is the translator's attribution line — the one Companion each report is credited to — and the narrator index is built from that: it names the people, and deliberately puts no tally against them.) The cast of names is the same — the Ṣaḥīḥs run on these same Companions, the same Successors and largely the same teachers — but if you want the numbers for Bukhari and Muslim specifically, they must come from a source that carries their chains.
The traditional narration tallies given in the section above (Abu Hurayrah's 5,374 and the rest) come from a different kind of counting altogether — the classical tally of the Musnad of Baqī ibn Makhlad. Those figures count routes, not distinct hadith: one saying reaching us down six chains counts six times. The number of separate things Abu Hurayrah reported is far smaller than 5,374.
The six imams behind the collections
The reports these Companions carried were written down for a century or more in scattered notebooks before six scholars, working in the 800s and early 900s CE, gathered and sifted them into the collections that became standard. This site hosts the full Sahih al-Bukhari and Sahih Muslim and all four Sunan. Their compilers:
- Imam al-Bukhari (d. 256 AH / 870 CE) — sifted tens of thousands of reports down to a few thousand he judged rigorously authentic. His Sahih is treated as the most reliable book after the Quran.
- Imam Muslim (d. 261 AH / 875 CE) — a student of the same generation; his Sahih is paired with Bukhari's as the two Sahihayn, the strictest of the collections.
- Abu Dawud (d. 275 AH / 889 CE) — his Sunan focuses on hadith that bear on rulings and law.
- al-Tirmidhi (d. 279 AH / 892 CE) — a student of Bukhari; his Jami' is known for stating the grade of each hadith and noting which scholars acted on it.
- al-Nasa'i (d. 303 AH / 915 CE) — compiled the most demanding of the four Sunan in its standards for accepting a report.
- Ibn Majah (d. 273 AH / 887 CE) — the sixth of the standard collections, with useful material found nowhere else, though it also carries weaker chains.
The Ṣaḥīḥs, the Sunans, and the other books
These collections were not all built for the same purpose, and knowing the type of a book tells you how to read a citation to it.
📗 The two Ṣaḥīḥs (aṣ-Ṣaḥīḥayn)
A Ṣaḥīḥ is a collection whose author set out to admit only what he judged authentic. Only two books carry this name as their standard: Ṣaḥīḥ al-Bukhari and Ṣaḥīḥ Muslim. Because of that self-imposed condition, the ummah received them as the most reliable books after the Quran — so a report found "in the Ṣaḥīḥayn" is, as a rule, sound, and this site cites Bukhari and Muslim without needing to add a grade. (A small number of individual narrations have been discussed by the critics, but the two books as a whole hold this rank.)
📘 The four Sunan
A Sunan is a collection arranged by the chapters of fiqh — purification, prayer, zakāt, marriage, trade, and so on — compiled to serve the jurist. The four Sunan (Abu Dawud, at-Tirmidhi, an-Nasaʾi, and Ibn Majah) deliberately gather ṣaḥīḥ, ḥasan and weak reports side by side. So a hadith being "in the Sunan" does not, by itself, mean it is authentic — each report must still be graded on its own chain. That is exactly why, throughout this site, a citation to a Sunan is paired with its grade (sahih / hasan / weak), while Bukhari and Muslim are not. At-Tirmidhi is especially helpful here, because he usually states the grade of each hadith himself.
📚 The Six Books — and the others
Together, the two Ṣaḥīḥs and the four Sunan are called the Kutub as-Sittah, "the Six Books." Alongside them stand other major works, read with the same care: the Muwaṭṭaʾ of Imam Malik (an early collection arranged by topic) and the Musnad of Imam Ahmad (arranged by the Companion who narrates, gathering very widely, its reports ranging from ṣaḥīḥ to weak). In every case the rule is one: the book gathers, and the science of the chain decides. A grade, not a title, is what tells you a report is authentic.
The sanad — how the chain safeguards the religion
The sanad (also called the isnad) is the chain of transmitters that carries a report back to its source, introduced by the formula "so-and-so narrated to us, from so-and-so, from so-and-so, that the Messenger of Allah (صلى الله عليه وسلم) said..." The sanad is distinct from the matn, the actual text or content of the report. A hadith is therefore two things at once: a statement, and a documented custody trail proving who handed that statement to whom, generation by generation, from today's reader all the way up to the Prophet (صلى الله عليه وسلم). No text is accepted on the strength of its wording alone; it is accepted only when its chain of custody can be examined and found sound.
This examination is the work of two allied sciences. ‘Ilm ar-rijal (the science of men) is the vast biographical record of every person who ever narrated — their names, dates of birth and death, who their teachers and students were, where they lived and travelled, and their reputation for honesty and memory. Built upon it is al-jarh wa al-ta‘dil (disparagement and endorsement), the disciplined critique in which the imams grade each narrator: is he thiqah (trustworthy), saduq (truthful but slightly weaker in precision), da‘if (weak), matruk (abandoned), or a kadhdhab (liar)? These verdicts were not opinion but the fruit of testing a narrator's reports against those of his reliable peers. The result is that Islam is the only tradition on earth that can name, date, and character-grade the human links behind its foundational texts.
For a report to be authentic (sahih), its chain must satisfy strict conditions at every single link: the chain must be connected (muttasil) — each narrator genuinely heard from the one above him; every narrator must possess ‘adalah (uprightness in religion and character); every narrator must possess dabt (precision of memory or of his written record); and the report must be free of shudhudh (contradicting more reliable narrators) and free of ‘illah (a subtle hidden defect). A weakness in any one link weakens the whole. A break in the chain (inqita‘) — whether a missing narrator at the end (mursal), a dropped link in the middle (munqati‘), two consecutive drops (mu‘dal), or a concealed drop by a deceptive narrator (tadlis) — severs the custody trail, because an unnamed link cannot be verified and may have been a liar. Likewise a single discredited narrator sitting in an otherwise pristine chain is enough to render the report da‘if, for the strength of a chain is the strength of its weakest link.
It is precisely this link-by-link accountability that made forgery detectable. Because every claimant of a hadith had to produce a named chain, and because those names could be cross-checked against the biographical archive, fabrication left fingerprints. Scholars caught forgeries when a chain claimed that A narrated from B although A was born after B died, or lived in a land B never entered, or was too young to have met him; when a known liar or extreme sectarian appeared in the chain; when a lone weak narrator contradicted a crowd of reliable ones; or when the wording itself betrayed a forger's motive (inflated rewards for trivial deeds, political flattery, or matter contradicting the Qur'an and established Sunnah). This is why the demand for isnad intensified after the fitnah: as Muhammad ibn Sirin recorded, people did not previously ask about the chain, but once discord arose they said, "Name for us your men" — so that the hadith of the people of the Sunnah would be accepted and that of the people of innovation rejected. The isnad turned the transmission of religion into an auditable public record in which a lie could not hide.
Narrations are also classified by the breadth of their transmission. A mutawatir report is one conveyed by so many narrators at every level that their collusion upon a lie is inconceivable; it yields certain knowledge (‘ilm yaqini) and its authenticity is beyond dispute — the five daily prayers and the wording of the Qur'an reach us this way. An ahad report is transmitted by a limited number of chains; when its isnad meets the conditions of authenticity it is sahih, obligatory to accept and act upon in both creed and law, even though it is arrived at through this rigorous evaluation rather than by sheer mass. Understanding this distinction guards against two errors: dismissing sound single-chain reports, and treating every widely-repeated saying as if it were beyond scrutiny. In sum, the isnad is not a scholarly ornament but the load-bearing structure of the entire religion — a preservation system granted to this ummah alone, by which the words of the Prophet (صلى الله عليه وسلم) reach us intact and verifiable across fourteen centuries.
An unbroken chain of vetted narrators, from the Prophet (peace be upon him) down to the page in your hand. The Prophet Muhammad (صلى الله عليه وسلم) — The source — the words, actions, and approvals being reported; The Companion (Sahabi) — e.g. Abu Hurayrah — heard or witnessed it directly; the Companions are collectively upright (‘udul); The Successor (Tabi‘i) — e.g. Sa‘id ibn al-Musayyib — met the Companion and received it from him face to face; The later generation (Atba‘ al-Tabi‘in) — e.g. Imam Malik ibn Anas — of the generation after the Tabi‘in; a trusted memoriser who received it through az-Zuhri (a Tabi‘i) and carried it to the compilers; The compiler — Imam al-Bukhari — Records the hadith in his Sahih with the full chain named, after verifying each narrator met the next; Us today — Receive it through continuously transmitted, licensed (ijazah) manuscripts of the Sahih, chain intact.
How one hadith reaches usAn unbroken chain of vetted narrators, from the Prophet (peace be upon him) down to the page in your hand
The checks applied at every link
- Ittisal (contiguity): each narrator provably met and heard from the one above him — no gap (inqita‘)
- ‘Adalah (uprightness): the narrator is a Muslim of sound religion and character, not a sinner or liar
- Dabt (precision): reliable memory or an accurate written record, tested against the reports of his peers
- No shudhudh: he does not contradict narrators more reliable or more numerous than himself
- No ‘illah: the chain is free of any subtle hidden defect that only expert critics can detect
الإسناد من الدِّين، ولولا الإسناد لقال من شاء ما شاء
The isnad is part of the religion; were it not for the isnad, whoever wished could say whatever he wished.
‘Abdullah ibn al-Mubarak — Introduction to Sahih Muslim
إنّ هذا العلم دين، فانظروا عمّن تأخذون دينكم
Verily this knowledge is religion, so look carefully to whom you take your religion from.
Muhammad ibn Sirin — Introduction to Sahih Muslim
لم يكونوا يسألون عن الإسناد، فلمّا وقعت الفتنة قالوا: سمّوا لنا رجالكم؛ فيُنظر إلى أهل السنّة فيُؤخذ حديثهم، ويُنظر إلى أهل البدع فلا يُؤخذ حديثهم
They did not used to ask about the isnad, but when the fitnah occurred they said: Name for us your men. So the people of the Sunnah would have their hadith accepted, and the people of innovation would have their hadith rejected.
Muhammad ibn Sirin — Introduction to Sahih Muslim
How hadith are graded
The four grades of hadith: Sahih (authentic) — a connected chain of upright, precise narrators, free of hidden defect, accepted and used as proof; Hasan (good) — the same conditions except a narrator is a step less precise in memory, also accepted and used as proof; Da'if (weak) — a break in the chain or a narrator whose reliability is in question, not used as proof that the Prophet said it; and Mawdu' (fabricated) — invented and falsely attributed to the Prophet, rejected outright.
The four gradesEvery report is placed into one of four grades — two accepted as proof, two not.
A connected chain of upright, precise narrators, free of any hidden defect and of oddity against stronger reports. Accepted and used as proof.
Meets the same conditions, except that a narrator in the chain is a step less precise in memory. Also accepted and used as proof.
A flaw somewhere: a break in the chain, or a narrator whose reliability or memory is in question. Not used as proof that the Prophet ﷺ said it.
Invented and falsely attributed to the Prophet ﷺ. Rejected outright, and not related except to warn people against it.
Every grade is, at heart, a verdict on the isnad described above — the chain of named narrators that carries each report ("so-and-so, from so-and-so, from the Prophet ﷺ") — together with the text (matn) it delivers. The scholars asked three questions of every report: is the chain connected, with each narrator having actually met the one he reports from? Is each narrator both upright in character and precise in memory? And does the report avoid any hidden defect or oddity against what stronger narrators transmitted? The answers place a hadith into one of four grades:
- Sahih (authentic) — a connected chain of upright, precise narrators, free of any hidden defect and of oddity against stronger reports. Accepted and used as proof.
- Hasan (good) — meets the same conditions, except that a narrator in the chain is a step less precise in memory. Also accepted and used as proof.
- Da'if (weak) — a flaw somewhere: a break in the chain, or a narrator whose reliability or memory is in question. Not used as proof that the Prophet ﷺ said it. One careful distinction: a weak chain means the attribution to the Prophet ﷺ is not established — it does not automatically make the statement's meaning false. A sentiment carried by a weak report may be true and even confirmed elsewhere by the Quran or an authentic hadith; what fails is the claim that the Prophet ﷺ said those words.
- Mawdu' (fabricated) — invented and falsely attributed to the Prophet ﷺ. Rejected outright, and not related except to warn people against it. The severity of this is not a scholarly technicality; it comes from the Prophet ﷺ himself:
وَمَنْ كَذَبَ عَلَىَّ مُتَعَمِّدًا فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنَ النَّارِ
"…and whoever tells a lie against me intentionally, then surely let him occupy his seat in Hell-fire."
Sahih al-Bukhari 110 · also related by Imam Muslim in the introduction to his Sahih
This is why the two Sahihayn on this page can be read with confidence, and why the Four Sunan carry a stated grade for each hadith. It is also why some of the most widely shared "hadith" online deserve caution: popularity is not a grade. For well-known sayings that are weak or fabricated — and what an authentic alternative looks like — see Popular but Not Authentic. And if something has been forwarded to you that you cannot place, send it to be checked — we will tell you where it comes from and what grade it carries, and publish the answer in the Q&A.
Take the full guide with you
The great narrators, the six imams behind the collections, the sanad that safeguards every report, and the four grades — the whole story of how the hadith reached us, in one PDF.
- The seven great narrators — who they were
- The six imams behind the collections
- The Ṣaḥīḥs, the Sunans, and the other books
- The sanad — how the chain safeguards the religion
- The four grades, from sahih to fabricated
