Abu Hatim ibn Habban al-Busti: He was one of the best worshippers of Allah
Ahmad ibn Hanbal: I was forbidden from writing about him, but I did not say that hadith should not be written from him. I only disliked these matters
Ibrahim ibn Urumah al-Asbahani: al-Athram is more memorizing than Abu Zar'ah al-Razi and more pious
Ibn Hajar al-Asqalani: Trustworthy Hadith Scholar
al-Khatib al-Baghdadi: He has a book on the defects of hadith, and the issues of Ahmad ibn Hanbal indicate his knowledge and understanding
al-Dhahabi: The Jurist, the Hadith Scholar, the author of the Sunan