Qadi al-Nu'man

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Abu Hanifa al-Nu‘man b. Muhammad b. Mansur b. Ahmad b. Hayyun al-Tamimi, generally known as al-Qadi al-Nu‘man (d. 974 CE/ 363 AH) was an Isma'ili jurist and the official historian of the Fatimid caliphs. Born in North Africa, he converted to Isma'ili Islam and began his career in Ifriqiya (modern-day Tunisia, western Libya and eastern Algeria) under the first caliph, al-Mahdi Billah (r. 909-934 CE/ 297-322 AH), quickly rising to become the most prominent judge (qadi) of the Fatimid state. In his fifty years of service to the Fatimids, he wrote a vast number of books under the encouragement of the caliphs on history, biography, jurisprudence (fiqh) and the interpretation of scripture (ta'wil). After the Fatimid conquest of Egypt and Syria, al-Nu'man left Ifriqiya and travelled to the newly-founded city of al-Qahira (Cairo) where he died in 974 CE/ 363 AH.

Al-Nu'man's most prominent work, the Da'a'im al-Islam ('The Pillars of Islam'), which took nearly thirty years to complete, is an exposition of the Fatimid jurisprudence. The work that was finally completed during the reign of the fourth caliph, al-Mu'izz li-din Allah (r. 953-975 CE/ 341-365 AH), was accepted in its time as the official code of the Fatimid state, and serves to this day as the primary source of law (sharia) for some Mustaali Isma'ili communities, especially the Tayyibis.

Another major work, the Kitab iftitah al-da‘wa wa-ibtida’ al-dawla (The Beginning of the Mission and Establishment of the State) narrates the rise of the Fatimids, including the initial stages of the Isma'ili da'wa in Yemen under Ibn Hawshab; Abu 'Abdullah al-Shi'i's correspondence with the Kutama Berber tribes and their military expeditions leading to the conquest of the Aghlabid empire; al-Mahdi Billah's emigration from Salamiya, his captivity in Sijilmasa and eventual release, culminating in the establishment of the Fatimid state in 909 CE. The book also gives an account of the circumstances leading to the revolt of al-Shi'i, for which it holds responsible the incitement of his elder brother Abu al-Abbas, and his later execution. It also gives a description of the Fatimid state upto the year 957, when the book was completed.

Al-Nu'man's other major works are the Ikhtilaf usul al-madhahib (Differences Among the Schools of Law), the Kitab al-majalis wa’l-musayarat (The Book of Sessions and Excursions) and the Kitab al-himma fi adab atba‘ al-a’imma (The Book of Etiquette Necessary for Followers of the Imams).