When is a woman considered pure and when can she begin to pray, according to the Maliki school of thought, if her menses flows for three days as pure blood, then stops for part of the fourth day, then resumes, then stops for one or two days, then yellowish or brownish discharge starts to flow intermittently until the fifteenth day when the fluid becomes pure white? And is fasting valid on the days when nothing flows during the daytime?

If menstruation becomes a regular occurrence, then a woman is considered to be menstruating during the days she sees blood or a brownish discharge, even if it's just one drop. The days when blood and brownish discharge cease are considered days of purity. As for the white discharge after the completion of fifteen days from the onset of menstruation, it is a sign of purity. The maximum duration of menstruation, according to the majority of scholars, is fifteen days.