Abu Ahmad al-Hakim: His hadith is not reliable.
Abu Ahmad ibn Adi al-Jurjani: He is not one of those who deliberately lies, but he relies on his memory and makes mistakes.
Abu al-Faraj ibn al-Jawzi: He was overcome by forgetfulness and carelessness, which corrupted his hadith.
Abu Bakr al-Bazzar: He was not a good memorizer, he would make mistakes and not correct them.
Abu Bakr al-Bayhaqi: He is not strong. Some hadith scholars considered him trustworthy while others considered him weak.
Abu Ja'far al-'Uqayli: Weak
Abu Hatim al-Razi: They criticized him for fabricating hadith, and his hadith is gone.
Abu Hatim ibn Hibban al-Busti: He was one of the worshipping scholars of al-Jazirah, who was known for his righteousness. However, he was neglectful in accuracy and would narrate based on assumptions. He would elevate the status of unknown individuals in his narrations and attribute fabricated statements to reliable narrators. Therefore, it is not permissible to rely on his narrations. However, if a narration from him aligns with that of reliable narrators, then I see no harm in considering it, without considering him reliable.
Abu Hafs 'Umar ibn Shahin: One should pause when considering his narrations.
Abu Dawud al-Sijistani: The people of Harran consider him weak.
Abu Zur'ah al-Razi: He is a weak narrator, and one should not narrate from him.
Abu 'Urwah al-Harrani: He relies on his memory and makes mistakes.
Abu Nu'aym al-Asbahani: He narrated fabricated narrations from Hisham and Ibn Juraij.
Ahmad ibn Hanbal: He is trustworthy but sometimes makes mistakes. On one occasion he said: 'There is nothing wrong with him, a righteous man, he used to seek truthfulness, and perhaps he grew old and became confused and used to conceal defects. He resembled the people of piety and goodness, except that he sometimes made mistakes.' He was told: 'Some people are talking about him.' He said: 'There was nothing wrong with him.' I said: 'They say: 'He did not differentiate between Sufyan and Yahya ibn Abi Unaysah.' He said: 'False, he was intelligent.'
Ahmad ibn Shu'ayb al-Nasa'i: His hadith is abandoned. On one occasion he said: 'He is not trustworthy.'
Ibrahim ibn Ya'qub al-Jawzajani: His hadith is abandoned.
Isma'il ibn Ya'qub ibn Subayh: He used to lie.
Ibn Abi Hatim al-Razi: He seeks truthfulness and praised him and mentioned him favorably. On one occasion he said: 'They criticized him for fabricating hadith, and his hadith is gone.' He said: 'I saw him resemble the narrators of hadith, and I think he used to conceal defects, and perhaps he grew old and became confused.'
Ibn Hajar al-'Asqalani: He is abandoned. Ahmad used to praise him and said perhaps he grew old and became confused and used to conceal defects.
Ibn 'Iraq: He narrated a fabricated and broken-chained narration.
al-Daraqutni: He is weak and mentioned him among the weak and abandoned narrators.
al-Dhahabi: Alas, his hadith is abandoned.
Sa'id ibn 'Ayyash al-Jurjiri: Others are more reliable than him, meaning he is extremely weak.
Salih ibn Muhammad al-Jazari: He is weak and disgraceful.
Ali ibn al-Madini: Our companions used to consider him weak.
Muhammad ibn Sa'd, the scribe of al-Waqidi: He had virtue and piety, but he was not that knowledgeable in hadith.
Muslim ibn al-Hajjaj al-Naysaburi: His hadith is abandoned.
Yahya ibn Ma'in: He is nothing. On one occasion he said: 'There is nothing wrong with him, but he used to make many mistakes.' In a narration by al-Dawri from him: 'He is trustworthy.' In a narration by Ibn Mahriz, he said: 'He did not lie, but he used to make mistakes.'
Ya'qub ibn Sufyan al-Faswi: Weak