The Book of the Believer · Hadith 58 (#Ḥadīth #8)

58- عن أب عبيدة قال: زاملت أبا جعفر (ع) إل مة، فإن إذا نزل صافحن واذا ركب صافحن ،فقلت: جعلت ‐ فداك، كأنك ترى ف هذا شيئاً؟ فقال: نَعم، إن المؤمن إذا لق أخاه فصافحه تفرقا من غير ذنب

58. It has been reported that Abu 'Ubaydah said: I accompanied Abu Ja'far to Makkah, and whenever he broke his journey, he shook hands with me; and when he commenced, he shook hands with me. So, I said to him, 'May I be ransomed for you! Perhaps you do this for a reason?' 'Indeed,' he replied, 'Whenever a believer meets his brother (in faith) and shakes hands with him, they are absolved of sins.'

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