Ibn `Abbas reported:I slept one night in the house of Maimuna when the Messenger of Allah (ﷺ) was there, with a view to seeing the prayer of the Messenger of Allah (ﷺ) at night. The Apostle of Allah (ﷺ) entered into conversation with his wife for a short while, and then went to sleep, and the rest of the hadith is the same and in it mention is made of: "He then got up, performed ablution and brushed his teeth."
وَحَدَّثَنِي أَبُو بَكْرِ بْنُ إِسْحَاقَ، أَخْبَرَنَا ابْنُ أَبِي مَرْيَمَ، أَخْبَرَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، أَخْبَرَنِي شَرِيكُ بْنُ أَبِي نَمِرٍ، عَنْ كُرَيْبٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّهُ قَالَ رَقَدْتُ فِي بَيْتِ مَيْمُونَةَ لَيْلَةَ كَانَ النَّبِيُّ صلى الله عليه وسلم عِنْدَهَا لأَنْظُرَ كَيْفَ صَلاَةُ النَّبِيِّ صلى الله عليه وسلم بِاللَّيْلِ - قَالَ - فَتَحَدَّثَ النَّبِيُّ صلى الله عليه وسلم مَعَ أَهْلِهِ سَاعَةً ثُمَّ رَقَدَ . وَسَاقَ الْحَدِيثَ وَفِيهِ ثُمَّ قَامَ فَتَوَضَّأَ وَاسْتَنَّ .
Muslim
The Book of Prayer - Travellers • Hadith 226