The Sufficient (Vol 3) · Hadith 854 (#Ḥadīth #9)
Chapter 82 | Patience, Impatience and to Acknowledge (the Reality of) Death
9ـ سَهْلٌ عَنْ عَلِيِّ بْنِ حَسَّانَ عَنْ مُوسَى بْنِ بَكْرٍ عَنْ أَبِي الْحَسَنِ الأوَّلِ (عَلَيْهِ الْسَّلام) قَالَ قَالَ ضَرْبُ الرَّجُلِ يَدَهُ عَلَى فَخِذِهِ عِنْدَ الْمُصِيبَةِ إِحْبَاطٌ لأَجْرِهِ.
9. Sahl has narrated from Ali ibn Hassa’n from Musa ibn Bakr who has said the following: “Abu al-Hassan the 1st , has said, ‘A man’s striking his hand on his thigh, when suffering a misfortune, causes suspension of his rewards for his suffering.’”
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).