The Book of the Believer · Hadith 84 (#Ḥadīth #1)
Chapter 3 | The bond that Allah has set amongst the believers
84- عن أبي عبد الله (ع) قال المؤمنون إخوةٌ بنو أبٍ وأُمّ، فإذا ضرب على رجُل منهم عرقٌ سهر الآخَرون.
84. It has been reported that Abu 'Abd Allah said:Believers are like brothers from one father and mother; when one of them is struck, the others lose sleep.
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).