Sunan Ibn Majah — The Book of Purification and its Sunnah — Hadith No: 583
Translation
It was narrated from 'Aishah that:The Messenger of Allah would become sexually impure then sleep as he was, without touching water. (Da'if)Sufyan said: "I mentioned this Hadith one day, and Isma'il said to me: 'O young man, you should support this Hadith with something else