Anas ibn Mālik (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) once entered their house in the afternoon and had a siesta there. While sleeping, the mother of Anas (may Allah be pleased with her) brought a glass bottle and collected the sweat of the Prophet (may Allah's peace and blessings be upon him) in it. The Prophet (may Allah's peace and blessings be upon him) got up and asked her about the purpose of collecting his sweat. Thereupon, she answered that she mixes his sweat with her perfume, as it is among the best perfumes.