Abu al-Qasim al-Tabarani: He has a sighting (of the Prophet)
Abu Hatim al-Razi: One does not ask about someone like him, he is greater than that
Abu Hatim ibn Hibban al-Busti: The Prophet (peace and blessings of Allah be upon him) named him As'ad and nothing was heard from the Prophet (peace and blessings of Allah be upon him)
Abu Dawud al-Sijistani: He accompanied the Prophet (peace and blessings of Allah be upon him) and pledged allegiance to him
Abu Mansur al-Baghdadi: There is a difference of opinion about his companionship, but he was born during his era, and he is one of those who are counted among the companions
Ahmad ibn Hanbal: He is not Abu Umamah the companion
Ibn Hajar al-Asqalani: He had a sighting (of the Prophet) but did not hear from him
Ibn Shihab al-Zuhri: He was one of the leaders and scholars of the Ansar
al-Daraqutni: He met the Prophet (peace and blessings of Allah be upon him) and his hadith is included in the Musnad
al-Dhahabi: He was born during the time of the Prophet (peace and blessings of Allah be upon him)
Jalal al-Din al-Suyuti: He was born during the lifetime of the Prophet (peace and blessings of Allah be upon him) and was sent by him
Muhammad ibn Isma'il al-Bukhari: The Prophet (peace and blessings of Allah be upon him) named him
Muhammad ibn Sa'd Katb al-Waqidi: Trustworthy, narrated many hadiths
Ya'qub ibn Shaiba al-Sudosi: He was born during the time of the Prophet (peace and blessings of Allah be upon him), and was brought to him, so he named him As'ad, and gave him the kuniya Abu Umamah after the name of his grandfather Abu Umamah