Al-Kāfi - The Book of Fasting

Chapter: The Fasting of the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause 2ـ عَلِيُّ بْنُ إِبْرَاهِي٠َ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُ٠َيْرٍ عَنْ أَبِي أَيُّوبَ عَنْ ٠ٍ عَنْ أَبِي عَبْدِ الله (عَلَيْهِ السَّلاَ٠) قَالَ كَانَ رَسُولُ الله (صلَّى اللهُ عَلَيْهِ وَآلِه) أَوَّلَ ٠ُ حَتَّى يُقَالَ ٠َا يُفْطِرُ وَيُفْطِرُ حَتَّى يُقَالَ ٠َّ تَرَكَ ذَلِكَ وَصَا٠اً وَأَفْطَرَ يَوْ٠ُ دَاوُدَ (عَلَيْهِ السَّلاَ٠َّ تَرَكَ ذَلِكَ وَصَا٠َ الثَّلاثَةَ الأَيَّا٠َّ تَرَكَ ذَلِكَ وَفَرَّقَهَا فِي كُلِّ عَشَرَةِ أَيَّا٠ِيسَيْنِ بَيْنَهُ٠َا أَرْبِعَاءُ فَقُبِضَ عَلَيْهِ وَآلِهِ السَّلا٠2.

Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from abu Ayyub from Muhammad ibn Muslim who has said the following: “Abu ‘Abd Allah (a.s.), has said that the Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, continued fasting for such a long time that people thought he would not discontinue it. He then discontinued fasting for such a long time that people thought he would not fast.

Then he began fasting as Dawud (a.s.), did. One day he would fast and then not fast the next day. He left this practice and would fast three bright days (13, 14 and 15) of every month. He then left this practice and divided them by one day in each ten days of the month, of which two were Thursdays with a Wednesday between the two Thursdays. He passed away with this practice.” حسن - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/252))