Sahih Muslim 335
Sahih Muslim · Book 3: The Book of Menstruation · A menstruating woman is obliged to make up missed fasts but not prayers
Mu'adha said:
وَ حَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ ، أَخْبَرَنَا عَبْدُ الرَّزَّاقِ ، أَخْبَرَنَا مَعْمَرٌ ، عَنْ عَاصِمٍ ، عَنْ مُعَاذَةَ ، قَالَتْ سَأَلْتُ عَائِشَةَ فَقُلْتُ مَا بَالُ الْحَائِضِ تَقْضِي الصَّوْمَ وَلاَ تَقْضِي الصَّلاَةَ فَقَالَتْ أَحَرُورِيَّةٌ أَنْتِ قُلْتُ لَسْتُ بِحَرُورِيَّةٍ وَلَكِنِّي أَسْأَلُ . قَالَتْ كَانَ يُصِيبُنَا ذَلِكَ فَنُؤْمَرُ بِقَضَاءِ الصَّوْمِ وَلاَ نُؤْمَرُ بِقَضَاءِ الصَّلاَةِ .
I asked 'A'isha: What is the reason that a menstruating woman completes the fasts (that she abandons during her monthly course). but she does not complete the prayers? She (Hadrat 'A'isha) said: Are you a Haruriya? I said: I am not a Haruriya, but I simply want to inquire. She said: We passed through this (period of menstruation), and we were ordered to complete the fasts, but were not ordered to complete the prayers.