Aḥmad b. Ṣāliḥ al-Jalīlī: Trustworthy and he was among the best
Ibn Ḥajar al-'Asqalānī: Trustworthy, devout, Successor
al-Dhahabī: A strong authority, pious, and his piety was well-known
‘Āmir b. Sharāhīl al-Sha‘bī: One of the most truthful, and he once said: Rabī' was the most pious companion of Ibn Mas‘ūd
Yaḥyā b. Ma‘īn: One does not ask about the likes of him