, Abū Muḥammad al-Marwazi al-Tamīmī, faḳīh who had been a pupil of al-S̲h̲āfiʿī. judge and counsellor of ʿAbbāsid caliphs, d. 242/857.

A native of Marw, he became Grand Judge ( ḳāḍī ’l-ḳuḍāt ) of Bag̲h̲dād after having been being appointed judge in Baṣra by al-Ḥasan b. Sahl [q.v.] in 202/817-18. He soon became a member of al-Maʾmūn’s court circle as an adviser and boon-companion, thus exemplifying a trend under this caliph to take legal scholars rather than administrators as political counsellors. He accompanied al-Maʾmūn to Syria and Egypt …