Sayyida Zainab bint Abu Salama (may Allah be pleased with her) narrates: Sayyida Umm Salama (may Allah be pleased with her) told her that once I was lying with the Prophet (peace and blessings of Allah be upon him) under a blanket. During that time, I began menstruating. I quietly slipped out, put on my menstrual clothes, and (returned to the Prophet, peace and blessings of Allah be upon him). The Prophet (peace and blessings of Allah be upon him) asked me: "Have you started menstruating?" I replied: "Yes." So the Prophet (peace and blessings of Allah be upon him) called me, and I came and lay with him.