Abu Dawud Al-Sijistani: More firm (in memory) than Abd As-Samad bin Abd Al-Warith
Abu Zur'ah Ar-Razi: He was a حافظ (memorizer) and trustworthy, meaning he was pious
Ahmad bin Salih Al-Jili: Trustworthy, and he believed in fatalism
Ibn Abi Hatim Ar-Razi: We wrote from him in Baghdad, truthful, pious, strong in Hadith, however he did not memorize well, and he had status among the people of knowledge. Abd Al-Warith bin Sa'eed and Mulazim bin Amr narrated from him. My father and Abu Zur'ah narrated from him
Ibn Hajar Al-'Asqalani: Trustworthy, firm, accused of fatalism
Adh-Dhahabi: The memorizer
Abd Ar-Rahman bin Yusuf bin Kharash: Truthful, fatalist
Yahya bin Ma'in: There is nothing wrong with him, firm, his book is sound
Yaqub bin Shaibah As-Sadusi: Trustworthy, firm, his book is sound, he used to believe in fatalism