Abu Hanifa al-Nu'man ibn Abi Abd Allah Muhammad ibn Mansur ibn Hayyun al-Tamimi (Arabic: أبو حنيفة النعمان بن محمد بن منصور بن حيون التميمي; c. 903 – 974 CE), commonly known as al-Qadi al-Nu'man, was a prominent Arab Isma'ili jurist, theologian, historian, and poet. He is widely considered the founder and most authoritative codifier of Isma'ili jurisprudence and played a pivotal role in shaping the intellectual and legal framework of the Fatimid Caliphate.
Biography Al-Qadi al-Nu'man was born around 903 CE in Qayrawan, Ifriqiya (modern Tunisia), into a family with a strong scholarly tradition. His family had connections to the Maliki school of Sunni Islam, but he later converted to Isma'ilism and dedicated his life to the service of the nascent Fatimid state. He began his career under the first Fatimid Caliph, Abdullah al-Mahdi Billah (r. 909–934), and continued to serve five successive Fatimid imams/caliphs: al-Mahdi, al-Qa'im bi-Amr Allah, al-Mansur bi-Nasr Allah, al-Mu'izz li-Din Allah, and al-Aziz Billah. His long tenure and close relationship with the Fatimid imams provided him with unique insight and authority in interpreting and codifying Isma'ili law. He rose to the position of chief Qadi (judge) and was given the honorific title "al-Qadi al-Nu'man." He was also the official historian of the Fatimid court, tasked with documenting the history and genealogy of the Fatimid imams. During the reign of Caliph al-Mu'izz, al-Nu'man moved with the Fatimid court from Ifriqiya to the newly founded city of Cairo in Egypt in 969 CE, where he continued his scholarly and judicial work. He died in Cairo in 974 CE.
Works and Contributions Al-Qadi al-Nu'man's literary output was extensive, comprising over fifty known works on various subjects, including jurisprudence (fiqh), theology (kalam), history, and exegesis (tafsir). His most enduring and influential contribution is the codification of Isma'ili law, which remains foundational for Taiyabi Isma'ili communities today (e.g., Dawoodi Bohras).
Among his most significant works are:
- Da'a'im al-Islam (The Pillars of Islam): This is his magnum opus and the most authoritative legal text in Isma'ili jurisprudence. It systematically outlines Isma'ili law based on the teachings of the Fatimid imams, covering rituals, ethics, social conduct, and legal rulings. It serves as the primary reference for Isma'ili fiqh.
- Kitab al-Himma fi Adab Atba' al-A'imma (Book of Diligence concerning the Etiquette of the Followers of the Imams): A work focused on the moral and ethical conduct expected of an Isma'ili believer, emphasizing devotion to the Imam and adherence to religious principles.
- Kitab Ikhbar al-Imama (Book of the Announcement of the Imamate): A historical work tracing the lineage of the Imams and asserting the legitimacy of the Fatimid dynasty.
- Kitab al-Majalis wa al-Musayarat (Book of Sessions and Excursions): A collection of sermons, legal opinions, and historical anecdotes from the Fatimid court, providing valuable insights into the intellectual and political life of the era.
- Kitab Asas al-Ta'wil (The Foundation of Esoteric Interpretation): A theological work discussing the esoteric (batin) meanings of the Quran and Islamic practices within the Isma'ili framework.
Legacy Al-Qadi al-Nu'man's work laid the intellectual and legal groundwork for the Fatimid Caliphate, providing a comprehensive legal system that integrated religious doctrine with practical governance. His jurisprudential writings, particularly Da'a'im al-Islam, remain the cornerstone of Isma'ili law and are revered by various Isma'ili traditions. He is considered the foremost jurist of the Fatimid period and his legacy continues to influence Isma'ili thought and practice to this day.