Abu Hatim al-Razi: Trustworthy, righteous
Abu Zar'a al-Razi: Trustworthy
Ahmad ibn Hanbal: Ismail is strong: more accurate in Hadith than Ayyub
Ahmad ibn Shu'ayb al-Nasa'i: Trustworthy
Ahmad ibn Salih al-Jili: Trustworthy
Ibn Hajar al-Asqalani: Trustworthy, ثبت
Al-Dhahabi: Trustworthy
Al-Zubayr ibn Bakkar: He was the jurist of the people of Mecca
Sufyan ibn Uyainah: Ismail was a memorizer of knowledge, with piety and truthfulness
Muhammad ibn Sa'd, the scribe of al-Waqidi: Trustworthy, narrated many Hadiths
Yahya ibn Ma'in: Trustworthy