Abu Ahmad ibn Adi al-Jurjani: He was known and had a good memory.
Abu al-Abbas ibn 'Uqdah al-Kufi: I never looked at anything of his except that I found it superior in that regard.
Abu Bakr al-Isma'ili: He was truthful, but the Baghdadis spoke against him and accused him.
Abu Ali al-Hafiz al-Naysaburi: He had a good memory.
al-Daraqutni: Abandoned, weak. In the questions of Abu Abd al-Rahman al-Salami, he said: He fabricates hadith.
al-Dhahabi: The hafiz, the traveler. Some considered him weak.
Umar ibn Sahl al-Qaramisini: He accused him of lying.