Al-Kāfi - The Book of Fasting

Chapter: Remedy and Compensatory Fast for the Missed Fasting During the Month of Ramadan َيْدُ بْنُ زِيَادٍ عَنِ ابْنِ سَ٠َاعَةَ عَنْ غَيْرِ وَاحِدٍ عَنْ أَبَانٍ عَنْ عَبْدِ الرَّحْ٠َنِ بْنِ أَبِي عَبْدِ الله قَالَ سَأَلْتُ أَبَا عَبْدِ الله (عَلَيْهِ السَّلاَ٠) عَنْ قَضَاءِ شَهْرِ رَ٠َضَانَ فِي ذِي الْحِجَّةِ أَ وَأَقْطَعُهُ قَالَ اقْضِهِ فِي ذِي الْحِجَّةِ وَاقْطَعْهُ إِنْ شِئْتَ.

He (the Imam) said, ‘You can make its Qada’ (compensatory fast) in Dhul al-Hajjah and discontinue if you like.’” وثق - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (16/313))