Narrated `Umar bin Al-Khattab: I asked Allah's Apostle "Can any one of us sleep while he is Junub?" He replied, "Yes, if he performs ablution, he can sleep while he is Junub."
Hadith Referenceصحيح البخاري / كتاب الغسل / 287
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة