Imam Muslim ibn al-Hajjaj (815-875 CE) was a student of al-Bukhari and one of the most meticulous hadith compilers of his era, born in Nishapur in present-day Iran and, like his teacher, a tireless traveller in pursuit of reliable narrations. His Sahih Muslim is, alongside Sahih al-Bukhari, one of the two most trusted hadith collections in Sunni Islam; together they are known as 'the two Sahihs.' What distinguishes Muslim's approach is its organization: rather than scattering variant wordings of the same hadith across different chapters as Bukhari sometimes does, Muslim gathers every chain and wording of a given report together in one place, making it easier to compare narrations and study a hadith's full transmission history at a glance. He also wrote a notable introduction laying out his methodology and criteria for accepting narrators. While Bukhari is generally held to apply the single strictest standard, many scholars consider Muslim's presentation more systematic and easier to navigate, and the two works are studied side by side rather than treated as competitors.
Q&A · Hadith
Who was Imam Muslim, and what makes his Sahih distinct from Bukhari's?
References
Sahih Muslim 2577
Informational, not a personal fatwa. Consult a qualified scholar for rulings on your situation.