Ahmad ibn Shuayb an-Nasai

An-Nasai's place among the six canonical Sunni collections rests on a book he did not originally set out to write as it now stands. His first and larger compilation, al-Sunan al-Kubra, included material of varying strength alongside the soundest reports he had gathered over a career of travel through Khorasan, the Hejaz, Iraq, Syria and, for much of his working life, Egypt. Later in his career he prepared a shorter selection from it, keeping the reports he judged most reliable and setting aside material he considered weaker, and it is this abridgement, generally known as al-Mujtaba, that later scholarship treats as Sunan an-Nasai and ranks among the six.

Critics of hadith transmission have long singled out an-Nasai's standards for narrator reliability as unusually exacting among the compilers of the four Sunan collections, closer in severity to the two Sahihs than to the other Sunan works. That reputation is precisely why an abridgement of his own larger book, rather than a work composed from scratch as the canonical text, was accepted into the six: the selection itself was understood as an act of the same rigorous criticism that built his reputation in the first place.

The book is organised, like the other Sunan works, by legal subject, moving through purification, prayer and the ordinary structure of Islamic legal literature, which is part of why the Sunan collections as a group are described as the jurists' books among the six, more directly oriented to legal use than the topically broader Sahihs.

The circumstances of an-Nasai's death are the least settled part of his biography. The most often repeated account places his final years in Damascus, where he is said to have composed a book setting out the merits of Ali, the fourth caliph, at a time and place where Umayyad-era sympathies still ran the other way, and to have been beaten by a hostile crowd as a result, dying not long afterward from the injuries. Some versions of the story place his death in Mecca instead, to which he is said to have been carried after the attack, and other biographical sources are considerably more cautious about the whole episode, noting that it appears in later compilations rather than in anything closer to his own lifetime.

The atlas records the account as reported rather than as settled fact, because the sourcing is exactly the kind the field itself is built to be suspicious of: a dramatic anecdote, attached to a revered compiler, appearing generations after the events it describes, without an isnad of its own that would meet the standard an-Nasai applied to the hadith he collected.

What is not in dispute is the book's standing. Sunan an-Nasai has been read as one of the six canonical Sunni collections for many centuries, and its reputation for careful narrator criticism has survived every uncertainty about the last chapter of its compiler's life.