Abu Ahmad ibn Adi al-Jurjani: Generally, what he narrates is not followed, either in Isnad or Matn
Abu Hatim al-Razi: Weak in Hadith
Abu Hatim ibn Hibban al-Busti: He makes mistakes
al-Daraqutni: Weak
al-Dhahabi: They weakened him
Yahya ibn Ma'in: Weak, his Hadith is not something