ʿAbd Allāh b. Aḥmad b. Ḥanbal, Abū ʿAbd al-Raḥmān (213–290/828–903) was the son of the founder of the Ḥanbalī school, and played an important role in promoting the works and teachings of his father. He pursued his education under the supervision of his father in his place of birth, Baghdad, and also studied the science of ḥadīth under the likes of Yaḥyā b. Maʿīn, Abū Bakr and ʿUthmān the sons of Abū Shayba, Abū Khaythama Zuhayr b. Ḥarb and Abū al-Rabīʿ al-Zahrānī (Ibn Abī Ḥātim, 2(2)/7; al-Khaṭīb, 9/375; al-Dhahabī, 13/517–520).

The sources insist upon…