Ibn `Abbas reported:

I slept (one night) in the house of Maimuna, the wife of the Messenger of Allah (ﷺ), and the Messenger of Allah (ﷺ) was with her that night. He (after sleeping for half of the night got up and) then performed ablution and then stood up and observed prayer. I too stood on his left side. He took hold of me and made me stand on his right side. He (the Prophet) observed thirteen rak`ahs on that night. The Messenger of Allah (ﷺ) then slept and snored and it was a habit with him to snore while sleeping. The Mu'adhdhin then came to him (to inform him about the prayer). He then went out and observed prayer without performing ablution. (`Amr said: Bukair b. Ashajj had narrated it to me )

حَدَّثَنِي هَارُونُ بْنُ سَعِيدٍ الأَيْلِيُّ، حَدَّثَنَا ابْنُ وَهْبٍ، حَدَّثَنَا عَمْرٌو، عَنْ عَبْدِ رَبِّهِ بْنِ سَعِيدٍ، عَنْ مَخْرَمَةَ بْنِ سُلَيْمَانَ، عَنْ كُرَيْبٍ، مَوْلَى ابْنِ عَبَّاسٍ عَنِ ابْنِ عَبَّاسٍ، أَنَّهُ قَالَ نِمْتُ عِنْدَ مَيْمُونَةَ زَوْجِ النَّبِيِّ صلى الله عليه وسلم وَرَسُولُ اللَّهِ صلى الله عليه وسلم عِنْدَهَا تِلْكَ اللَّيْلَةَ فَتَوَضَّأَ رَسُولُ اللَّهِ صلى الله عليه وسلم ثُمَّ قَامَ فَصَلَّى فَقُمْتُ عَنْ يَسَارِهِ فَأَخَذَنِي فَجَعَلَنِي عَنْ يَمِينِهِ فَصَلَّى فِي تِلْكَ اللَّيْلَةِ ثَلاَثَ عَشْرَةَ رَكْعَةً ثُمَّ نَامَ رَسُولُ اللَّهِ صلى الله عليه وسلم حَتَّى نَفَخَ وَكَانَ إِذَا نَامَ نَفَخَ ثُمَّ أَتَاهُ الْمُؤَذِّنُ فَخَرَجَ فَصَلَّى وَلَمْ يَتَوَضَّأْ ‏.‏ قَالَ عَمْرٌو فَحَدَّثْتُ بِهِ بُكَيْرَ بْنَ الأَشَجِّ فَقَالَ حَدَّثَنِي كُرَيْبٌ بِذَلِكَ ‏.‏