Abu Bakr al-Bayhaqi: Thiqah (Trustworthy)
Abu Hatim al-Razi: Saduq (Truthful)
Abu Hatim ibn Hibban al-Busti: He mentioned him among the Thiqah (Trustworthy)
Abu Dawud al-Sijistani: He did not memorize, then he memorized later
Abu Zur'ah al-Razi: He was better than Abu Nu'aym
Ahmad ibn Hanbal: A righteous man, trustworthy, there is nothing wrong with his religion
Ahmad ibn Shu'ayb al-Nasa'i: There is nothing wrong with him
Ahmad ibn Salih al-Jili: Thiqah (Trustworthy)
Ishaq ibn Siyar al-Nisaburi: I have not seen among the Sheikhs someone with a better memory than Qubaysah ibn Uqbah
Ibn Hajar al-'Asqalani: Saduq (Truthful) he may have differed, and once: One of the major Sheikhs of al-Bukhari
Al-Dhahabi: Hafiz (One who has memorized a vast amount of knowledge)
Salih ibn Muhammad al-Jawzajani: A righteous man, except that they criticized his hearing from Sufyan
Abd al-Rahman ibn Yusuf ibn Kharash: Saduq (Truthful)
Muhyi al-Din al-Nawawi: Thiqah (Trustworthy) Saduq (Truthful), narrated many Hadiths from Sufyan al-Thawri
The authors of Tahrir Taqrib al-Tahdhib: Thiqah (Trustworthy), some of them criticized his Hadiths narrated from al-Thawri, and others considered him trustworthy
Yahya ibn Ma'in: Thiqah (Trustworthy) in everything except in the Hadiths of Sufyan, he is not that strong, because he heard from him when he was young