Abu Hatim Al-Razi: Unknown
Abu Hatim bin Hibban Al-Busti: He mentioned him in "Ath-Thiqat" and said: "He narrates from Al-Qasim bin Muhammad, and Abd Al-Malik bin Abd Al-Malik narrated from him."
Muhammad bin Ismaeel Al-Bukhari: He mentioned him in "At-Tareekh Al-Kabeer" and indicated that he narrates from Al-Qasim, and Abd Al-Malik bin Abd Al-Malik narrated from him.