Abu Hatim al-Razi: His hadiths are written, but not used as evidence.
Ahmad ibn Shuayb al-Nasa'i: He is alright.
Ibn Hajar al-'Asqalani: He is alright.
Al-Dhahabi: He is not an authority.
Authors of Tahrir Taqrib al-Tahdhib: He is weak but considered. Abu Karib narrated uniquely from him.