Muḥammad ibn Ḥammād al-Muqriʾ said, “I asked Yaḥyā ibn Maʿīn about ʿAlī ibn al-Jaʿd, and he replied, ‘Reliable and truthful, reliable and truthful.’ I said, ‘But what about the things reported from him?’ He answered, ‘What things? He is reliable and truthful.’ (1)

Muslim said of him, ‘He is reliable, but he is a Jahmī (an adherent of the Jahmiyyah).’

I say: For this reason Aḥmad ibn Ḥanbal forbade his two sons to take hadith from him.

A number of ḥadīth scholars were exceedingly strict with anyone who committed even a minor slip that ran counter to the Sunnah; otherwise, ʿAlī was a great imām and an authoritative proof. It is said that he fasted one day and broke his fast the next for sixty years. (2)

It should suffice that Ibn ʿAdiyy states in his al-Kāmil: “I have not found among his narrations any objectionable report, provided it is transmitted from him by a trustworthy narrator.”

Yaḥyā ibn Maʿīn also said, “He is more reliable than Abū al-Naḍr.” (3)

ʿAlī ibn al-Jaʿd said, “In Mecca, in the year 157 AH, I heard [hadith] from Sufyān al-Thawrī.”

Abū Ḥātim remarked, “How well ʿAlī ibn al-Jaʿd preserved his ḥadīth! He is truthful.” (4)

ʿAbd al-Razzaq ibn Sulaymān ibn ʿAlī ibn al-Jaʿd reported: “I heard my father say: al-Maʾmūn gathered the jewel-dealers and argued with them over some goods in their possession; he then stood up to attend to some business and later came back, whereupon everyone in the assembly rose for him except ʿAlī ibn—”