Narrated Abu Salama: I asked `Aisha "Did the Prophet use to sleep while he was Junub?" She replied, "Yes, but he used to perform ablution (before going to bed).
Hadith ReferenceSahih Bukhari / The Book of Ghusl (Washing of the Whole Body) / Hadith: 286
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة