chief of the Sanhaja, military leader, also known as Abuʾl-Futuh Yusuf, was the son of Ziri ibn Manad, a chief of the Sanhaja, one of the main Berber peoples of the Maghrib. Many Sanhaja tribes joined the Shiʿi Fatimids when they were based in Ifriqiya (909–972 CE), while the majority of the Zanata Berber tribes offered their support to the Sunni Umayyads of Cordoba. The Kharijites of the Maghrib also opposed the Fatimids, creating a situation of permanent conflict among the tribes of the region. In 324/936 Ziri constructed the fortified town of Ashir, which al-Nuwayri describes as populated by merchants dealing in agricultural products, religious scholars, and jurists. Ziri became a prominent client of the Fatimids after they assisted the Fatimid caliph al-Qaʾim during the Kharijite siege of al-Mahdiyya in 334–5/946.
According to chroniclers Buluggin was the youngest of Ziri s ten or twelve sons but the most able ...