Is it permissible to fast and pray while experiencing menstrual discharge in the form of spotting or brownish discharge, considering that one is taking birth control pills and is in a state of postnatal bleeding, and is it necessary to take a menstrual regulator or just wait?

Summary of the answer: The brownish and yellowish discharges during the period of menstruation are considered menses by the majority of scholars. Therefore, it is obligatory to refrain from prayer and fasting until complete purity is attained. It is not advisable to take pills to stop menstruation for the purpose of fasting unless there is a valid need.