Hadith 309
Chapter 6: It is permissible for one who is junub to sleep, but it is recommended for him to perform wudu’, and wash his private parts if he wants to eat, drink, sleep, or have intercourse - كتاب الحيض
وَحَدَّثَنَا الْحَسَنُ بْنُ أَحْمَدَ بْنِ أَبِي شُعَيْبٍ الْحَرَّانِيُّ، حَدَّثَنَا مِسْكِينٌ، - يَعْنِي ابْنَ بُكَيْرٍ الْحَذَّاءَ - عَنْ شُعْبَةَ، عَنْ هِشَامِ بْنِ زَيْدٍ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يَطُوفُ عَلَى نِسَائِهِ بِغُسْلٍ وَاحِدٍ .
Anas reported:
The Messenger of Allah (ﷺ) used to have sexual intercourse with his wives with a single bath.
Reference : Sahih Muslim 309
In-book reference : Book 3, Hadith 30
USC-MSA web (English) reference : Book 3, Hadith 606