Ahmad ibn Abi Bakr al-Zuhri

Abū Muṣʿab Aḥmad ibn Abī Bakr al-Qāsim ibn al-Ḥārith al-Zuhri (أبو مصعب أحمد بن أبي بكر القاسم بن الحارث الزهري), 767–856 CE / 150–242 AH, was a Muslim scholar and judge (qadi) who was a student of Malik ibn Anas.

He was born and lived in Medina, where he wrote a work called al-Mukhtaṣar fī al-fiqh ('The Epitome on Fiqh'), as well as a recension of Malik ibn Anas' Kitāb al-Muwaṭṭaʾ. He was dismissed from his position as qadi by Qutham ibn Ja'far in 210 AH (825/826 CE). In his judicial opinions (fatwas), he relied not only on hadith reports, but also on rational discretion (raʾy).

Abū Muṣʿab's recension of the Kitāb al-Muwaṭṭaʾ is approximately five to ten percent larger than the recension of Yahya ibn Yahya al-Laythi, which is considered the 'vulgate' or standard version in the Maliki school of law.