Abu Bakr al-Isma'ili: One of the trustworthy narrators, and he would not retract what was in his book even if he knew it was a mistake
Ahmad ibn Kamil al-Shajari: He was very talkative and meticulous in his writing
Ibn Hajar al-'Asqalani: One of the great hadith scholars
al-Khatib al-Baghdadi: He considered him trustworthy and said: I do not think he is anyone other than al-Haytham ibn Khalid
al-Daraqutni: Trustworthy, and once he said: One of the trustworthy narrators
al-Dhahabi: The precise and trustworthy, and once he said: The trustworthy hafiz
Abdan ibn Ahmad al-Ahwazi: I entered with Ahmad ibn al-Sukkari upon this sheikh, and he asked him about this hadith, and I heard it from him, and he was very surprised by it