The Book of Occultation — al-Ṭūsī · Hadith 120 (#Ḥadīth #37)

60- قال: وروى إبراهيم بن المستنير عن المفضل قال: سمعت أبا عبد الله عليه السلام يقول: إن لصاحب هذا الأمر غيبتين؛ إحداهما أطول من الأخرى،حتى يقال: مات! وبعض يقول: قتل. فلا يبقى على أمره إلا نفر يسير من أصحابه،ولا يطلع أحد على موضعه وأمره ولا غيره إلا المولى الذي يلي أمره.

H 60 - Ibrahim bin Mustanir narrates from Mufaddal bin Umar that he said: I heard Imam Ja’far Sadiq say: There are two occultations for the master of this affair; one of them being longer than the other, till it would be said: He has died; and some will say: He is killed. Thus only a few companions of the Imam would remain steadfast on his Imamate and no one would know about his whereabouts and his circumstances, except a servant, who would perform his errands.

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