The Book of Occultation — al-Ṭūsī · Hadith 443 (#Ḥadīth #10)

230- وبهذا الاسناد، عن علي بن محمد، عن محمد بن إسماعيل بن موسى بن جعفرعليه السلام- وكان أسن شيخ من ولد رسول الله صلى الله عليه وآله وسلم-قال:رأيته بين المسجدين وهو غلام.

H 230 - It is narrated from the same chains from Ali bin Muhammad from Muhammad bin Ismail bin Musa Ibn Ja’far – he was the oldest leader of the family of Muhammad in Iraq – who said: “I (Muhammad bin Ismail bin Musa) saw the son of Hasan bin Ali bin Muhammad Askari between the two mosques (Mecca and Medina). He was a youth.”

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).