(6) باب جَوَازِ نَوْمِ الْجُنُبِ وَاسْتِحْبَابِ الْوُضُوءِ لَهُ وَغَسْلِ الْفَرْجِ إِذَا أَرَادَ أَنْ يَأْكُلَ أَوْ يَشْرَبَ أَوْ يَنَامَ أَوْ يُجَامِعَل
'Abdullah b. Abu'l-Qais reported:
I asked 'A'isha about the Witr (prayer) of the Messenger of Allah (ﷺ) and made mention of a hadith, then I said: What did he do after having sexual intercourse? Did he take a bath before going to sleep or did he sleep before taking a bath? She said: He did all these. Some- times he took a bath and then slept, and sometimes he performed ablution only and went to sleep. I (the narrator) said: Praise be to Allah Who has made things easy (for human beings).
Reference: Sahih Muslim 307 a
In-book reference: Book 3, Hadith 27
USC-MSA web (English) reference(deprecated numbering scheme): Book 3, Hadith 603