The wife of the Messenger, Sayyida Umm Salamah (may Allah be pleased with her), narrates that during the time of the Prophet, a woman began to bleed. So when Sayyida Umm Salamah (may Allah be pleased with her) asked for a ruling for her, the Prophet (peace and blessings be upon him) said: She should observe the number of nights and days in a month during which she used to have her menstruation; when she has completed that duration, she should perform ghusl (ritual bath), tie a cloth around herself, and start performing prayers.