Abu Dawud al-Sijistani: He is not anything (credible). People are mistaken, they say: Kalb on the authority of his father, he is not that one
Abu Zar'ah al-Razi: Trustworthy
Ahmad ibn Salih al-Jili: Trustworthy
Ibn Hajar al-'Asqalani: Truthful, and they (scholars) mentioned him among the Companions
al-Dhahabi: Reliable
Muhammad ibn Sa'd Katib al-Waqidi: Trustworthy, and I saw them (scholars) considering his hadith good and using it as an argument