The Book of Occultation — al-Ṭūsī · Hadith 446 (#Ḥadīth #13)
Chapter 35 | Reports of those who saw the Imam of the Time
233- وبهذا الاسناد، عن أبي علي بن مطهر قال: رأيته ووصف قده.
H 233 - It is narrated from the same chains from Abu Ali bin Mutahhar that he said: “I saw him,” and he went on to describe him.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).