Khālid, Qutaybah ibn Saʿīd, Isḥāq ibn Rāhwayh, and their contemporaries.
He was a peer of Abū ʿĪsā al-Tirmidhī.
Narrations from him were transmitted by ʿAbd al-Raḥmān ibn Abī Ḥātim, ʿAlī ibn Ibrāhīm ibn Salamah al-Qaṭṭān, ʿUmar ibn Isḥāq, the judge Abū Aḥmad al-ʿAssāl, and Abū Jaʿfar al-Nufaylī.
He passed away in 289 AH.
177 – al-Ḥammār, Abū Jaʿfar Aḥmad ibn Mūsā ibn Isḥāq *
The imam, traditionist, and trustworthy transmitter: Abū Jaʿfar Aḥmad ibn Mūsā ibn Isḥāq al-Tamīmī, the Kufan, known as al-Ḥammār al-Bazzāz.
He narrated from Abū Nuʿaym, Quṭbah ibn al-ʿAlāʾ, Waḍḍāḥ ibn Yaḥyā, Makhbūl ibn Ibrāhīm, al-Ḥasan ibn al-Rabīʿ, ʿAlī ibn Thābit al-Dahhān, and others.
Transmitters who related from him include Aḥmad ibn ʿAmr ibn Jābir al-Ramlī, Abū al-Ḥasan ibn Salamah al-Qazwīnī al-Qaṭṭān, Muḥammad ibn Aḥmad ibn Yūsuf, Abū al-ʿAbbās ibn ʿUqda, Ibn Abī Dārim, and many more.
I know of no criticism leveled against him.
He died in Ramaḍān, 286 AH, when he was in his nineties.