Abu Ahmad ibn Adi al-Jurjani: Truthful, there is nothing wrong with him, and he has unique narrations from al-Thawri, and he has many hadiths from al-Thawri
Abu Bakr al-Bazzar: Famous
Abu Bakr al-Bayhaqi: The most complete in narrating hadith
Abu Bakr ibn Zanjawayh: I have not seen anyone more pious than al-Firyabi
Abu Hatim al-Razi: Truthful, trustworthy
Abu Hatim ibn Hibban al-Busti: He was one of the best worshippers of Allah
Abu Zur'a al-Razi: Al-Firyabi is more beloved to me than Yahya ibn Yaman
Ahmad ibn Hanbal: A righteous man
Ahmad ibn Shu'ayb al-Nasa'i: Trustworthy, and once: There is nothing wrong with him
Ahmad ibn Salih al-Jalili: Trustworthy, and he erred in one hundred and fifty hadiths
Ibn Hajar al-Asqalani: Trustworthy, it is said that he erred in some hadith of Sufyan and he is preferred over Abd al-Razzaq, and once: One of the great sheikhs of al-Bukhari and the majority considered him trustworthy, al-Bukhari relied on him because he selected his hadiths and distinguished them
Al-Dhahabi: Hafiz, and the reason for his unique narrations from al-Thawri is that he accompanied him for a while, so it is not denied that he would have unique narrations from that sea
Muhammad ibn Isma'il al-Bukhari: One of the best people of his time in narrating from Sufyan
Yahya ibn Ma'in: He considered him trustworthy, and he criticized him for the hadith about hair in the nose