Imam an-Nasai

Ahmad ibn Shuayb an-Nasai (215-303 AH / 829-915 CE) was the compiler of Sunan an-Nasai, one of the six canonical hadith collections, renowned for applying the strictest grading criteria after al-Bukhari and Muslim. Born in the city of Nasa in Khorasan (in present-day Turkmenistan), he traveled extensively across the Muslim world, studying under Qutaybah ibn Said, Ishaq ibn Rahawayh, and many other leading scholars of hadith.

An-Nasai originally compiled a larger work called as-Sunan al-Kubra, from which he later extracted the smaller as-Sunan as-Sughra (also known as al-Mujtaba or al-Mujtana), which became the canonical version. His grading criteria are considered among the most rigorous of the six compilers, to the point that some scholars rank his collection third in authenticity after the two Sahihs. He was particularly skilled at identifying subtle defects in narrators that other scholars overlooked.

An-Nasai settled in Egypt for a significant period, where he was respected as the leading hadith authority of his time. Late in his life, he traveled to Damascus, where he was persecuted for writing a work on the virtues of Ali ibn Abi Talib (Khasais Amir al-Muminin Ali ibn Abi Talib), which angered partisans of the Umayyads. He was beaten and died shortly afterward in either Ramla or Mecca in 303 AH (915 CE). His contributions to hadith criticism and methodology remain foundational in Islamic scholarship.