What is the ruling on the prayer and fasting of one who sees a yellowish or brownish discharge before her period, and is she sinful for not stopping prayer and fasting until she sees blood?

Yellowish and brownish discharges are considered menses if they occur during the customary days of menstruation or are connected to blood. In this case, prayer and fasting are suspended, and any obligatory fasting must be made up. However, if they occur outside the customary days, they are not considered menses. In this situation, the woman is obligated to perform ablution, pray, and fast, and she is not required to make up any fasts.