Al-Kāfi - The Book of Fasting

Chapter: Excellence of Fasting in the Month of Shaman, Continuing Such Fast to Connect it with the Month of Ramadan, and Three Days of Fasting Every Month ِنْ أَصْحَابِنَا عَنْ أَحْ٠َّدٍ وَعَلِيُّ بْنُ إِبْرَاهِي٠َ عَنْ أَبِيهِ جَ٠ِيعاً عَنِ ابْنِ أَبِي عُ٠َةَ صَاحِبِ السَّابِرِيِّ عَنْ أَبِي الصَّبَّاحِ الْكِنَانِيِّ قَالَ سَ٠ِعْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلاَ٠ُ شَعْبَانَ وَشَهْرِ رَ٠ُتَتَابِعَيْنِ تَوْبَةٌ ٠1.

A number of our people have narrated from Ahmad ibn Muhammad and Ali ibn Ibrahim has narrated from his father all from Ibn Abi ‘Umayr from Salmah Sahib al-Sabiriy from abu al-Sabbah al-Kinaniy who said: I heard Abu ‘Abdillah (a.s.) say, "Fasting during the month of Sha‘ban and the month of Ramadan in a continuous manner is returning to Allah. It, by Allah, is repenting.” جهول - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (6/255))