Abu Ahmad ibn Adi al-Jurjani: He has hadiths from Qatada, some of which are corroborated by trustworthy narrators, and some of which are not
Abu al-Faraj ibn al-Jawzi: He weakened him
Abu Bakr al-Bazzar: He is not strong
Abu Ja'far al-'Uqayli: He narrated hadiths that are not corroborated
Abu Hatim al-Razi: He is very confused in hadith, and is not strong in hadith
Abu Hatim ibn Hibban al-Busti: He narrates from trustworthy narrators what is not corroborated
Abu Dawud al-Sijistani: He is rejected in hadith
Ahmad ibn Shu'aib al-Nasa'i: He is not strong
Ahmad ibn Salih al-Jili: Trustworthy
Ibn Hajar al-'Asqalani: Weak
Al-Dhahabi: He weakened him
Abd al-Rahman ibn Yusuf ibn Khurash: Weak in hadith
Yahya ibn Ma'in: Weak, not trustworthy, and not anything. And once: Weak in hadith. And in the narration of Ibn Mahriz, he said: A sheikh from Kufa, who used to live in Baghdad, narrates from Qatada, weak in hadith
Yaqub ibn Shaibah al-Siduusi: Very weak in hadith, he has rejected hadiths