The Book of Occultation — al-Ṭūsī · Hadith 342 (#Ḥadīth #12)

158- وفي رواية أخرى أنه قبض ليلة إحدى وعشرين وضرب ليلة تسع عشرة. وهي الأظهر.

H 158 - In another traditional report, it is mentioned that Imam was wounded on the eve of the 19th and he passed away on the 21st. Obviously the second report is more accurate.

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