Abu al-Hasan ibn al-Qattan al-Fasi: Unknown, we do not know of anyone who narrated from him except al-Harith
Ibn Hajar al-Asqalani: Accepted
Al-Dhahabi: Not an authority
Abd al-Haqq ibn Abd al-Rahman al-Ishbili: This isnad is not reliable
Muhammad ibn Ismail al-Bukhari: He mentioned him in al-Tarikh al-Kabir, and indicated that he narrated from his father, from his grandfather, and al-Harith ibn Ubayd narrated from him
Authors of Tahrir Taqrib al-Tahdhib: Unknown, as Ibn al-Qattan said, only two people narrated from him, and Ibn Hibban alone mentioned him among the trustworthy