Abu Ahmad ibn Adi al-Jurjani: The most severe criticism against him was from Yahya ibn Ma'in and Ahmad, who narrated his hadith from his father, from al-A'mash. Then, there are other hadiths from him that were criticized besides what I mentioned, numerous hadiths.
Abu Hatim al-Razi: He is upon justice, and he is like a proverb used by the Arabs for the perished.
Abu Hatim ibn Hibban al-Busti: He makes mistakes and contradicts.
Abu Zur'a al-Razi: A bad man, and once: Weak, I do not narrate from him, and once: His father did not hear a letter from al-A'mash.
Abu Ya'la al-Khalili: He narrated hadiths from Malik that are not corroborated, and he is very weak.
Ahmad ibn Hanbal: He denounced him.
Ibn Hajar al-Asqalani: Weak
Amr ibn Awn al-Salami: He said to Abu Hatim: Write from him.
Authors of Tahrir Taqrib al-Tahdhib: Matrook al-Hadith
Yahya ibn Ma'in: Nothing, and once: That man is a bad liar, and once: A liar, if you meet him, slap him, and once: I expelled Muhammad ibn Khalid for his father from al-A'mash, and his father did not hear from al-A'mash, and he narrated categories of Ibn Abi 'Urubah, and he narrated Munkar things, and once: His hadith is nothing.