Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) used to visit Lady Umm Sulaym (may Allah be pleased with her). She would spread a mat for the Prophet (peace and blessings be upon him), and he would rest on it. That lady would collect the sweat of the Prophet (peace and blessings be upon him) and mix it into her perfume. Then she would spread the mat for the Prophet (peace and blessings be upon him), and he would perform prayer on it.