Abu Hatim al-Razi: I do not know of any narration for Suhayl and 'Ubayd, the brothers, except what was narrated by Haywah ibn Shurayh, from Nafi', from Muhammad ibn Abi Salih, and once: I do not know him. Abu Muhammad said, meaning: I do not know him.
Abu Hatim ibn Hibban al-Busti: He makes mistakes, and once: Among the weak narrators, and he said: Argumentation using his narrations is dropped.
Ibn Hajar al-'Asqalani: Saduq (truthful) with some errors
Authors of Tahrir Taqrib al-Tahdhib: His condition is unknown, as only two people narrated from him, and only Ibn Hibban mentioned him among the trustworthy.
Yahya ibn Ma'in: I do not know him