[4] Shaykh Tusi, while counting about 3300 narrators and companions of Jaʿfar ibn Muḥammad aṣ-Ṣādiq, has mentioned Zakaria al-Ash'ari.
His father is "Idris ibn Abdullah", whom Najashi called him a trustworthy person and mentioned a book by him.
[11] "Zakaria ibn Idris Ash'ari Qomi", in addition to training outstanding and powerful students, also wrote books.
Shaykh Tusi[12] and Najashi[11] have listed only one book in his name, and Agha Bozorg Tehrani has mentioned it in "Az-Zaree'a" under the title "Kitab al-Hadith" (Arabic: کتاب الحدیث).
He is buried in Sheikhan cemetery next to the grave of his cousin "Zakaria ibn Adam Ash'ari Qomi" in Qom, Iran.