Abu Ahmad ibn 'Adi al-Jarjani: The sum of what he narrated are hadiths with mistakes in their chains of narration, and the rest of his hadiths are fine
Abu Ja'far al-'Uqayli: They criticized his hadith about Mansur
Abu Hatim al-Razi: Sound hadith
Abu Hatim ibn Hibban al-Busti: He mentioned him among the trustworthy narrators
Abu Dawud al-Sijistani: A man of sunnah, except that there is irjaa' in him, and once he said: 'Do not write from the likes of Warqa' until he repents
Ahmad ibn Hanbal: Trustworthy, a man of sunnah, and once: 'It is as if he weakened him in tafsir
Ibn Hajar al-'Asqalani: Truthful in his narration from Mansur, lenient, and once: 'He was accused of irjaa'
Al-Dhahabi: The hafiz, truthful, righteous
Al-'Abbas ibn Mus'ab al-Marwazi: The most knowledgeable of people in what is narrated from Ibn Abi Najih
Shu'ba ibn al-Hajjaj: He praised him, and once he said to a man: 'Do not write from the likes of Warqa' until he repents
Authors of Tahrir Taqrib al-Tahdhib: Trustworthy except from Mansur, and he is relied upon by everyone
Mu'adh ibn Mu'adh al-'Anbari: He praised him and was pleased with him
Wakee' ibn al-Jarrah: Trustworthy
Yahya ibn Sa'id al-Qattan: He criticized him, and once he was asked about his hadith and he said: 'It is worthless
Yahya ibn Ma'in: Trustworthy, and his kuniya is Abu 'Umar, and once: Righteous, and in a narration by Ibn Mahriz from him he said: 'There is nothing wrong with him