Abu Hatim ibn Hibban al-Busti: The correct opinion is that he was the Mawla of Mithqab, and Mithqab was the Mawla of Mas-hal, and Mas-hal was the Mawla of Shamas, and Shamas was the Mawla of al-Abbas ibn Abd al-Muttalib, and therefore it was said that he was the Mawla of al-Abbas
Ahmad ibn Salih al-Jalili: Thiqah (Trustworthy)
Ibn Hajar al-Asqalani: Thiqah (Trustworthy)
Muhammad ibn Sa'd Kathib al-Waqidi: Narrated few Hadiths