Abu al-Hasan ibn al-Qattan al-Fasi: Unknown
Abu Hatim al-Razi: His affairs were strong
Abu Hatim ibn Habban al-Busti: He collected and categorized, and was mostly concerned with parchment, piety, and strictness in the Sunnah
Abu Abd Allah al-Hakim al-Nishapuri: Imam of the Hadith scholars in Persia
Abu Ya'la al-Khalili: Trustworthy
Ahmad ibn Shu'ayb al-Nasa'i: There is nothing wrong with him
Ibn Hajar al-'Asqalani: Trustworthy Hadith Preserver
Al-Dhahabi: The Hadith Preserver, Trustworthy, Compiler, Good, Righteous
Muslim ibn al-Qasim al-Andalusi: There is nothing wrong with him