Sunan Ibn Majah, Chapter: Chapters Regarding Funerals

that Umm Atiyyah said: "The Messenger of Allah (saw) entered upon us when we were washing his daughter Umm Kulthum. He said: 'Wash her three or five times, or more than that if you think you need to, with water and lote leaves, and put camphor or a little camphor in (the water) for the last washing. When you have finished, call for me.' When we finished, we called him, and he gave his waist-wrapper to us and said: 'Shroud her with it.'" Sahih