Are the intermittent brown discharges that a woman experiences considered menstrual bleeding that prevents prayer, or not?

If a woman sees a brownish discharge (kudra) during her regular menstrual period, it is considered menstruation, and she should perform ghusl after it ceases and refrain from prayer during it. If she sees it outside her regular period, it is considered istihadah (irregular bleeding). As for seeing normal blood, it is considered menstruation until the bleeding stops or until any yellow (sufra) or brownish discharge (kudra) connected to it ceases. If she sees purity during the day and then the blood returns, she is considered to be menstruating again, and the purity that occurs intermittently during menstruation is a valid state of purity.