deen2u — your one-stop center for Islamic resources: the Holy Quran, Hadith, practices, stories of the Prophets, Q&A, and how to practice Islam.
Practice (fiqh) is what a Muslim does. Aqeedah is what a Muslim believes — the foundation everything else stands on.
Every article — Allah, the Angels, the Books, the Messengers, the Last Day, and Divine Decree — with its Quran and hadith daleel, in a 10-page A5 guide.
The clearest, most complete statement of Islamic belief comes from a single well-known hadith — the Hadith of Jibril — in which the angel Jibril, appearing to the Prophet ﷺ in the form of a man, asked him a series of questions in front of the companions, including what iman (faith) is:
أَنْ تُؤْمِنَ بِاللَّهِ وَمَلاَئِكَتِهِ وَكُتُبِهِ وَرُسُلِهِ وَالْيَوْمِ الآخِرِ وَتُؤْمِنَ بِالْقَدَرِ خَيْرِهِ وَشَرِّهِ
"[Faith] is to believe in Allah, His angels, His books, His messengers, and the Last Day, and to believe in divine decree, its good and its bad."
Sahih Muslim 8
The same six are echoed in the Quran itself, most directly in the closing ayah of Surah al-Baqarah:
ءَامَنَ ٱلرَّسُولُ بِمَآ أُنزِلَ إِلَيْهِ مِن رَّبِّهِۦ وَٱلْمُؤْمِنُونَ ۚ كُلٌّ ءَامَنَ بِٱللَّهِ وَمَلَـٰٓئِكَتِهِۦ وَكُتُبِهِۦ وَرُسُلِهِۦ لَا نُفَرِّقُ بَيْنَ أَحَدٍۢ مِّن رُّسُلِهِۦ ۚ وَقَالُوا۟ سَمِعْنَا وَأَطَعْنَا ۖ غُفْرَانَكَ رَبَّنَا وَإِلَيْكَ ٱلْمَصِيرُ
"The Messenger has believed in what was revealed to him from his Lord, and [so have] the believers. All of them have believed in Allah and His angels and His books and His messengers, [saying], 'We make no distinction between any of His messengers.' And they say, 'We hear and we obey. [We seek] Your forgiveness, our Lord, and to You is the [final] destination.'"
Iman was only one of three questions Jibril asked that day. The full hadith maps the whole religion in layers: Islam — the five pillars, what a Muslim does; Iman — these six articles, what a Muslim believes; and Ihsan — the quality meant to suffuse both: "to worship Allah as if you are seeing Him, for though you do not see Him, He surely sees you." When the questioner left, the Prophet ﷺ told Umar, "That was Jibril; he came to teach you your religion." Scholars across the madhhabs treat this single hadith as a syllabus for the whole deen — which is why this page on belief and the Five Pillars page on practice belong side by side.
Mind map: Iman (faith) at the centre, branching out to the six articles of faith — belief in Allah, the Angels, the Books, the Messengers, the Last Day, and Divine Decree. Each branch links to its section below.
The foundation of everything: that Allah alone is the Creator, Sustainer, and sole deserving object of worship — with no partners, no equals, and nothing resembling Him. This is tawheed, and it's the single most repeated theme in the Quran. For its three categories and the tawheed of the Prophets, see the full page: Tawhid — the Oneness of Allah.
قُلْ هُوَ ٱللَّهُ أَحَدٌ
"Say, 'He is Allah, [who is] One, Allah, the Eternal Refuge. He neither begets nor is born, nor is there to Him any equivalent.'"
Angels are created beings of light who don't disobey Allah and carry out specific tasks — Jibril brought revelation to the prophets, Mikail is named alongside him in the Quran (2:98) and is charged in the reports with rain and sustenance, and each person has angels recording their deeds. Believing in them is explicit in the ayah above (2:285), alongside belief in Allah, the books, and the messengers together. For who they are and their named tasks in the authentic texts, see the full page: Belief in the Angels.
Allah revealed scripture to various prophets across history — including the Tawrah (Torah) to Musa, the Zabur (Psalms) to Dawud, and the Injil (Gospel) to Isa — and finally the Quran to Muhammad ﷺ, which Muslims believe is preserved in its original form, unlike the earlier scriptures which were not preserved intact over time. See the full page Belief in the Books of Allah, and also the Quran reader and the relevant Stories of the ProphetsSeerah pages for more on each.
Allah sent prophets and messengers to every nation, calling people back to the worship of Allah alone — the same core message throughout, even as the details of law differed. Muhammad ﷺ is the last of them; no prophet will come after him. For the ulū al-ʿazm, the messengers' infallibility in conveying revelation, and Muhammad ﷺ as the seal, see the full page: Belief in the Messengers.
مَّا كَانَ مُحَمَّدٌ أَبَآ أَحَدٍۢ مِّن رِّجَالِكُمْ وَلَـٰكِن رَّسُولَ ٱللَّهِ وَخَاتَمَ ٱلنَّبِيِّـۧنَ ۗ وَكَانَ ٱللَّهُ بِكُلِّ شَىْءٍ عَلِيمًۭا
"Muhammad is not the father of [any] one of your men, but [he is] the Messenger of Allah and the last of the prophets. And ever is Allah, of all things, Knowing."
This life ends, and every person will be resurrected and held accountable — every deed weighed, nothing lost. It's the belief that gives ultimate meaning and consequence to everything a person does in this life. For the full journey — how life begins, death itself, life in the grave, and Judgment Day in detail — see Akhirah — the Life After Death.
يَوْمَئِذٍۢ يَصْدُرُ ٱلنَّاسُ أَشْتَاتًۭا لِّيُرَوْا۟ أَعْمَـٰلَهُمْ
"That Day, the people will depart separated [into categories] to be shown [the result of] their deeds."
Everything that happens — good and what appears to be bad — occurs by Allah's knowledge and permission, already known to Him before it happens. This doesn't erase human free will or responsibility for one's own choices; it's held alongside it, not instead of it — a person still genuinely chooses, prays, and works, while trusting the outcome to Allah. For the four levels of qadar and the balance between decree and free will, see the full page: Belief in Divine Decree (Qadar).
إِنَّا كُلَّ شَىْءٍ خَلَقْنَـٰهُ بِقَدَرٍۢ
"Indeed, all things We created with predestination."
مَآ أَصَابَ مِن مُّصِيبَةٍۢ فِى ٱلْأَرْضِ وَلَا فِىٓ أَنفُسِكُمْ إِلَّا فِى كِتَـٰبٍۢ مِّن قَبْلِ أَن نَّبْرَأَهَآ ۚ إِنَّ ذَٰلِكَ عَلَى ٱللَّهِ يَسِيرٌۭ
"No disaster strikes upon the earth or among yourselves except that it is in a register before We bring it into being — indeed that, for Allah, is easy."
Classical scholars unpack belief in qadar into four levels, each with its own daleel: Allah's knowledge — He has always known all things (Quran 22:70); the writing — everything is recorded in the Preserved Tablet, al-Lawh al-Mahfuz; His will — nothing happens outside it; and His creation of all things. The Prophet ﷺ said: "Allah ordained the measures of the creation fifty thousand years before He created the heavens and the earth" (Sahih Muslim 2653b). Held together, the four levels are how the tradition keeps decree from collapsing into fatalism: Allah's knowledge and writing describe His vantage over events, not a force compelling anyone — the choice remains genuinely yours, and the outcome remains genuinely His.
The six articles above are only worth as much as the source they are drawn from. Belief that drifts from its evidence stops being belief and turns into guesswork. So a single question runs underneath this whole page: how do we know a belief or a practice genuinely belongs to the religion, and isn't something added later? The answer the earliest Muslims lived by is called the manhaj — the method, or the way — of the salaf.
The salaf ("the predecessors") are the first three generations of Islam: the companions who learned directly from the Prophet ﷺ, then the tabi'un who learned from the companions, then the generation after them. The Prophet ﷺ singled these three out by name:
خَيْرُ النَّاسِ قَرْنِي ثُمَّ الَّذِينَ يَلُونَهُمْ ثُمَّ الَّذِينَ يَلُونَهُمْ
"The best people are those living in my generation, and then those who will follow them, and then those who will follow the latter."
Being closest in time to the Prophet ﷺ, they understood his words the way they were meant, spoke his language as a first tongue, and saw how he and his companions actually put the religion into practice. That is why the standard is not simply "the Quran and the Sunnah" in the abstract — anyone can quote a text and bend it — but the Quran and the authentic Sunnah as the salaf understood and applied them. Their understanding is the guardrail that stops a verse or a hadith from being reshaped into whatever a later reader, a passing trend, or a personal feeling wants it to mean.
A few rules follow from this, and they show up again and again in how questions of belief and worship get settled:
مَنْ أَحْدَثَ فِي أَمْرِنَا هَذَا مَا لَيْسَ مِنْهُ فَهُوَ رَدٌّ
"Narrated Aisha:Allah's Messenger (ﷺ) said, "If somebody innovates something which is not in harmony with the principles of our religion, that thing is rejected"
The last principle is to hold to the jamaah — the main body of the believers united on the guidance the salaf received — rather than splintering off behind private opinion. Allah commands it directly in Quran 3:103: "And hold firmly to the rope of Allah all together, and do not become divided."
Put plainly: when you meet a belief or an act of worship and want to know whether it belongs to the religion, one measure decides it — and there are several things people reach for instead that, on their own, can't.
None of that is a charge against any particular group, and it is no licence to argue. It is the habit the companions themselves lived by: when a proof from the Book or the Sunnah was clear, no one's opinion stood above it. Follow the evidence over the names attached to it — including names you love and respect. Imam Malik is reported to have said that everyone's word may be taken or left, except the one buried in this grave — pointing to the Prophet ﷺ.
The other half of the same habit is honesty about your own limits. Weighing evidence is a trained skill, and most questions need someone who has that training. Where you cannot judge the proof yourself, the command is to return to people who can — Quran 16:43: "So ask the people of knowledge if you do not know." Following the salaf has never meant every reader ruling for themselves; it means letting the revelation decide, through those qualified to read it.
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