Experts on Islam consider "Kitab Firaq al-Shi'a" a seminal work, as it is the earliest textbook that provides an Imami Shi'a perspective on the differences among, and origins of, the Islamic sects including a full exposition of various sects within Shi'ism. This title presents a complete English translation of "Kitab Firaq al-Shi'a".

The earliest surviving work on Shii sects, Kitab Firaq al-Shia by al-Nawbakhti offers a uniquely Twelver Shia perspective on early Shii movements, including the Zaydis, the Ismailis, and extremist sects (ghulat). History, charisma, and ideology combine in a fascinating narrative which provides a window into the early Shii consciousness. Extensively annotated and highly readable, this is the first translation of this work to be published in the English language. An indispensable reference for Islamic historians, theologians, and researchers.