ʿAbd Allāh b. Jaʿfar, Abū Muḥammad (d. 80/699), was one of the younger Companions of the Prophet, the son of Jaʿfar b. Abī Ṭālib (known as ‘al-Ṭayyār’), the husband of Zaynab bint ʿAlī b. Abī Ṭālib, and a well-known, influential figure among the Banū Hāshim who, besides holding political positions, transmitted ḥadīths from the Prophet and his Household.

His kunya is given as Abū Jaʿfar (al-Bukhārī, 5/7; see also Ibn Ḥibbān, 27) and sometimes as Abū Muḥammad (Ibn ʿAsākir, 27/252). However, he is not often referred to by his kunya (Ibn al-Ṣalāḥ, 196). There is also disagreement over t…