Abu Ahmad ibn Adi al-Jurjani: He only has a few hadiths, and the amount of hadiths he has does not indicate whether he is truthful or a liar
Abu Zar'ah al-Razi: Weak in hadith
Al-Dhahabi: There is disagreement about him
Abd al-Rahman ibn Mahdi: He did not consider him reliable
Amr ibn Ali al-Fallas: Abu Dawud al-Tayalisi narrated reprehensible hadiths from him regarding the market and other things
Yahya ibn Ma'in: Trustworthy