[Machine] Aisha, the wife of the Prophet, said "When the Messenger of Allah wanted to sleep while in a state of ritual impurity (junub), he would perform ablution (wudu) for prayer before sleeping." And Abu Abdullah al-Hafiz narrated to us, from Abu Bakr ibn Ishaq, from Ismail ibn Qutaybah, from Yahya ibn Yahya, from Layth ibn Saad, who mentioned it similarly.  

عَنْ عَائِشَةَ زَوْجِ النَّبِيِّ ﷺ أَنَّهَا قَالَتْ كَانَ رَسُولُ اللهِ ﷺ إِذَا أَرَادَ أَنْ يَنَامَ وَهُوَ جُنُبٌ تَوَضَّأَ وُضُوءَهُ لِلصَّلَاةِ قَبْلَ أَنْ يَنَامَ 967 وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ ثنا أَبُو بَكْرِ بْنُ إِسْحَاقَ ثنا إِسْمَاعِيلُ بْنُ قُتَيْبَةَ ثنا يَحْيَى بْنُ يَحْيَى ثنا اللَّيْثُ بْنُ سَعْدٍ فَذَكَرَهُ بِمِثْلِهِ