Whenever the Messenger of Allah ﷺ intended to sleep after having sexual intercourse, he performed ablution as for the prayer before going to sleep.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا أَرَادَ أَنْ يَنَامَ وَهُوَ جُنُبٌ تَوَضَّأَ وُضُوءَهُ لِلصَّلاَةِ قَبْلَ أَنْ يَنَامَ  

Whenever the Messenger of Allah ﷺ had sexual intercourse and intended to eat or sleep, he performed the ablution of prayer.  

كَانَ رَسُولُ اللَّهِ ﷺ إِذَا كَانَ جُنُبًا فَأَرَادَ أَنْ يَأْكُلَ أَوْ يَنَامَ تَوَضَّأَ وُضُوءَهُ لِلصَّلاَةِ  

AI-Hakam narrated to us who heard from Ibrahim narrating that.  

سَمِعْتُ إِبْرَاهِيمَ يُحَدِّثُ  

Umar said: Is one amongst us permitted to sleep in a state of impurity (i. e. after having sexual intercourse)? He (the Holy Prophet) said: Yes, after performing ablution.  

يَا رَسُولَ اللَّهِ أَيَرْقُدُ أَحَدُنَا وَهُوَ جُنُبٌ قَالَ نَعَمْ إِذَا تَوَضَّأَ  

'Umar asked the verdict of the Shari'ah from the Apostle ﷺ thus: Is it permissible for any one of us to sleep in a state of impurity? He (the Prophet said: Yes, he must perform ablution and then sleep and take a bath when he desires.  

أَنَّ عُمَرَ اسْتَفْتَى النَّبِيَّ ﷺ فَقَالَ هَلْ يَنَامُ أَحَدُنَا وَهُوَ جُنُبٌ قَالَ نَعَمْ لِيَتَوَضَّأْ ثُمَّ لْيَنَمْ حَتَّى يَغْتَسِلَ إِذَا شَاءَ  

Umar b. al-Khattab said to the Messenger of Allah ﷺ, that he became Junbi during the night. The Messenger of Allah ﷺ said to him: Perform ablution, wash your sexual organ and then go to sleep.  

ذَكَرَ عُمَرُ بْنُ الْخَطَّابِ لِرَسُولِ اللَّهِ ﷺ أَنَّهُ تُصِيبُهُ جَنَابَةٌ مِنَ اللَّيْلِ فَقَالَ لَهُ رَسُولُ اللَّهِ ﷺ تَوَضَّأْ وَاغْسِلْ ذَكَرَكَ ثُمَّ نَمْ  

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).  

عَنْ وِتْرِ رَسُولِ اللَّهِ ﷺ فَذَكَرَ الْحَدِيثَ قُلْتُ كَيْفَ كَانَ يَصْنَعُ فِي الْجَنَابَةِ أَكَانَ يَغْتَسِلُ قَبْلَ أَنْ يَنَامَ أَمْ يَنَامُ قَبْلَ أَنْ يَغْتَسِلَ قَالَتْ كُلُّ ذَلِكَ قَدْ كَانَ يَفْعَلُ رُبَّمَا اغْتَسَلَ فَنَامَ وَرُبَّمَا تَوَضَّأَ فَنَامَ قُلْتُ الْحَمْدُ لِلَّهِ الَّذِي جَعَلَ فِي الأَمْرِ سَعَةً  

This hadith has been transmitted with the same chain of transmitters from Mu'awyia b. Salih by Zuhair b. Harb, 'Abd al-Rahman b. Mahdi, Harun b. Sa'id al-'Aili and Ibn Wahb.  

عَنْ مُعَاوِيَةَ بْنِ صَالِحٍ بِهَذَا الإِسْنَادِ مِثْلَهُ  

The Messenger of Allah ﷺ said: When anyone amongst you has sexual intercourse with his wife and then he intends to repeat it, he should perform ablution. In the hadith transmitted by Abu Bakr. (the words are):" Between the two (acts) there should be an ablution," or he (the narrator) said:" Then he intended that it should be repeated."  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا أَتَى أَحَدُكُمْ أَهْلَهُ ثُمَّ أَرَادَ أَنْ يَعُودَ فَلْيَتَوَضَّأْ زَادَ أَبُو بَكْرٍ فِي حَدِيثِهِ بَيْنَهُمَا وُضُوءًا وَقَالَ ثُمَّ أَرَادَ أَنْ يُعَاوِدَ  

The Messenger of Allah ﷺ used to have sexual intercourse with his wives with a single bath.  

أَنَّ النَّبِيَّ ﷺ كَانَ يَطُوفُ عَلَى نِسَائِهِ بِغُسْلٍ وَاحِدٍ