سَأَلْتُهُ[1] عَنِ الضَّحِكِ هَلْ يَقْطَعُ الصَّلَاةَ قَالَ أَمَّا التَّبَسُّمُ فَلَا يَقْطَعُ الصَّلَاةَ وَ أَمَّا الْقَهْقَهَةُ فَهِيَ تَقْطَعُ الصَّلَاةَ. وَ رَوَاهُ- أَحْمَدُ بْنُ مُحَمَّدٍ عَنْ عُثْمَانَ بْنِ عِيسَى عَنْ سَمَاعَةَ.
“I once asked him (the Imam) (a.s.), about laughing if it destroys Salah (prayer). He (the Imam) said, ‘Smiling does not destroy Salah (prayer) but laughing loudly destroys it.’” It (the above Hadith) also is narrated from Ahmad ibn Muhammad from ‘Uthman ibn ‘Isa from Sama‘ah.”