Al-Kāfi
Hadith 123018ـ عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ عَلِيِّ بْنِ مُحَمَّدٍ الْقَاسَانِيِّ عَنْ سُلَيْمَانَ بْنِ حَفْصٍ الْمَرْوَزِيِّ قَالَ كَتَبْتُ إِلَى أَبِي الْحَسَنِ مُوسَى بْنِ جَعْفَرٍ (عَلَيْهِ الْسَّلام) فِي سَجْدَةِ الشُّكْرِ فَكَتَبَ إِلَيَّ مِائَةَ مَرَّةٍ شُكْراً شُكْراً وَإِنْ شِئْتَ عَفْواً عَفْواً.
18. Ali ibn Ibrahim has narrated from Ali ibn Muhammad al-Qasaniy from Sulayman ibn Hafs al-Marwaziy who has said the following: “I wrote to abu al-Hassan Musa ibn Ja‘far (a.s.), about prostration for thanksgiving. He wrote back to me. ‘It is one hundred times ‘Shukran’ (O Lord, I thank You), or if you like, say “Afwan’ (O Lord, I beg forgiveness from You) one hundred times.’”