Vowing to fast for three days every month, which is to be done during her menstrual period

Q: A woman vowed to fast three days a month, but sometimes this coincides with menstruation or a delivery. Should she make up for these days after Tuhr (period of ceremonial purity) or not?

A: The woman who vowed to fast three days a month should do so, for it is a vow to perform an act of obedience. If she cannot fast in a month due to giving birth or any such excuse, she should make up for these days, for this Sawm (Fast) is Wajib (obligatory) as it is a vow.May Allah grant us success. May Allah's Peace and Blessings be upon our Prophet Muhammad, his family and Companions!