Hadith 540
´It was narrated from Mu'awiyah bin Abu Sufyan that:` He asked his sister Umm Habibah, the wife of the Prophet: "Did the Messenger of Allah ever offered prayer in a garment in which he had sexual intercourse?" She said: "Yes, if there was nothing noxious on it."
Hadith 638
´It was narrated from Mu'awiyah bin Abu Sufyan that :` He asked Umm Habibah, the wife of the Prophet: "What did you used to do with the Messenger of Allah when you were menstruating?" She said: "If it was at the beginning of the period when the bleeding is heavy, we would tie the waist-wrapper tightly around our thighs, then lie down with the Messenger of Allah."