Mu’adhah says: I asked Sayyidah A’ishah (RA): What is the reason that a menstruating woman makes up missed fasts but does not make up missed prayers? She said to me: Are you from the region of Harura? I said: No, I am not a Haruriyyah, I am just asking a question. So she said: We used to experience menstruation during the time of the Messenger of Allah (peace and blessings be upon him), and we were commanded regarding some things and not commanded regarding others. The Prophet (peace and blessings be upon him) would order us to make up missed fasts but would not order us to make up missed prayers.