Abū Bakr b. Ḥazm (d. 120/738) was the son of Muḥammad b. ʿAmr al-Anṣārī, a tābiʿī (one of the generation following that of the Prophet and his Companions), a traditionist (muḥaddith), a judge (qāḍī) and the governor (wālī) of Medina during the Marwānid caliphate. His grandfather, ʿAmr b. Ḥazm, was a Companion of the Prophet and appointed governor of Najrān by him. In 10/631, Abū Bakr's father Muḥammad was born in Najrān and named Muḥammad at the behest of the Prophet (Ibn Saʿd, 5/69). Al-Barqī (p. 6) and al-Ṭūsī (p. 63) consider Ab…