Al-Kāfi - The Book of Fasting

Chapter: Disciplines During Fasting 8ـ وَبِهَذَا الإِسْنَادِ قَالَ كَانَ عَلِيُّ بْنُ الْحُسَيْنِ (عَلَيْهِ٠) إِذَا كَانَ شَهْرُ رَ٠ْ إِلاَّ بِالدُّعَاءِ وَالتَّسْبِيحِ وَالاسْتِغْفَارِ وَالتَّكْبِيرِ فَإِذَا أَفْطَرَ قَالَ الله٠َّ إِنْ شِئْتَ أَنْ تَفْعَلَ فَعَلْتَ. 8.

It is narrated from him (narrator of previous Hadith) who has said the following: “Ali ibn al-Husayn (a.s.), in the month of Ramadan would not speak anything other than prayer, Tasbih (Allah is free of all defects), ’Istighfar, (O Allah, I appeal before You for forgiveness) and Takbir (Allah is great beyond description).

After breaking his fast, he would say, ‘O Allah, if You want to do something, You just do it without fail.’” جهول - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (6/250))