Abū al-Ḥusayn ‘Asākir ad-Dīn Muslim ibn al-Ḥajjāj ibn Muslim ibn Ward ibn Kawshādh al-Qushayrī an-Naysābūrī ,  commonly known as Imam Muslim, was an Islamic scholar, particularly known as a muhaddith (scholar of hadith). His hadith collection, known as Sahih Muslim, is one of the six major hadith collections in Islam and is regarded as one of the two most authentic (sahih) collections, alongside Sahih al-Bukhari.

He was born 817 CE (206 AH) and died 875 CE  (261 AH).

Estimates on the number of hadiths in his books vary from 3,033 to 12,000, depending on whether duplicates are included, or only the text (isnad) is. His Sahih ("authentic") is said to share about 2000 hadiths with Bukhari's Sahih.

The Muslim's teachers included Harmala ibn Yahya, Sa'id ibn Mansur, Abd-Allah ibn Maslamah al-Qa'nabi, al-Dhuhali, al-Bukhari, Ibn Ma'in, Yahya ibn Yahya al-Nishaburi al-Tamimi, and others. Among his students were al-Tirmidhi, Ibn Abi Hatim al-Razi, and Ibn Khuzaymah, each of whom also wrote works on hadith. After his studies throughout the Arabian Peninsula, Egypt, Iraq and Syria, he settled in his hometown of Nishapur, where he met, and became a lifelong friend of al-Bukhari.

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