Chapter on Oaths, Vows, and Expiations
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 38
وَ قَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: "كَفَّارَةُ اَلضَّحِكِ أَنْ يَقُولَ: اَللَّهُمَّ لاَ تَمْقُتْنِي ".
Imam Jafar ibn Muhammad Al-Sadiq عليه السلام said: "The expiation for excessive laughter is to say, 'O Allah سبحانه وتعالى, do not despise me.'"
- Ṣaḥīḥ al-Faqīh