It is narrated from Hazrat Anas (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) used to visit Hazrat Umm Sulaym (may Allah be pleased with her) for a midday rest, and the Prophet (peace and blessings be upon him) would sweat a lot. Hazrat Umm Sulaym (may Allah be pleased with her) had made a leather bed for the Prophet (peace and blessings be upon him), and he would rest on it. Afterwards, she would collect his sweat. Once, the Prophet (peace and blessings be upon him) asked, "Umm Sulaym! What are you doing?" She replied, "O Messenger of Allah! We will mix your sweat into our perfume." The Prophet (peace and blessings be upon him) prayed for her.