[Machine] The Messenger of Allah ﷺ used to perform ablution for prayer before going to sleep if he was in a state of janabah (ritual impurity). He would say, "Whoever intends to sleep while in a state of janabah, let him perform ablution for prayer."
كَانَ رَسُولُ اللهِ ﷺ إِذَا كَانَ جُنُبًا وَأَرَادَ أَنْ يَنَامَ وَهُوَ جُنُبٌ تَوَضَّأَ وُضُوءَهُ لِلصَّلَاةِ قَبْلَ أَنْ يَنَامَ وَكَانَ يَقُولُ مَنْ أَرَادَ أَنْ يَنَامَ وَهُوَ جُنُبٌ فَلْيَتَوَضَّأْ وُضُوءَهُ لِلصَّلَاةِ
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
"If the Messenger of Allah ﷺ wanted to sleep while he was Junub, he would perform Wudu' as for prayer before sleeping."
إِنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا أَرَادَ أَنْ يَنَامَ وَهُوَ جُنُبٌ تَوَضَّأَ وُضُوءَهُ لِلصَّلاَةِ قَبْلَ أَنْ يَنَامَ
"If the Messenger of Allah ﷺ wanted to sleep while he was Junub, he would perform Wudu' as for prayer before sleeping." (Using translation from Nasāʾī 258)
«أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ إِذَا أَرَادَ أَنْ يَنَامَ وَهُوَ جُنُبٌ تَوَضَّأَ وُضُوءَهُ لِلصَّلَاةِ قَبْلَ أَنْ يَنَامَ»