It is reported on the authority of 'A'isha that the prayer of Messenger of Allah ﷺ in the night consisted of ten rak'ahs. He observed a Witr and two rak'ahs (of Sunan) of the dawn prayer, and thus the total comes to thirteen rak'ahs. (Using translation from Muslim 738e)
سَمِعْتُ عَائِشَةَ تَقُولُ كَانَتْ صَلَاةُ رَسُولِ اللهِ ﷺ مِنَ اللَّيْلِ عَشْرَ رَكَعَاتٍ يُوتِرُ بِسَجْدَةٍ وَيَرْكَعُ رَكْعَتَيِ الْفَجْرِ فَتِلْكَ ثَلَاثَعَشْرَةَ
It is reported on the authority of 'A'isha that the prayer of Messenger of Allah ﷺ in the night consisted of ten rak'ahs. He observed a Witr and two rak'ahs (of Sunan) of the dawn prayer, and thus the total comes to thirteen rak'ahs.
سَمِعْتُ عَائِشَةَ تَقُولُ كَانَتْ صَلاَةُ رَسُولِ اللَّهِ ﷺ مِنَ اللَّيْلِ عَشَرَ رَكَعَاتٍ وَيُوتِرُ بِسَجْدَةٍ وَيَرْكَعُ رَكْعَتَىِ الْفَجْرِ فَتِلْكَ ثَلاَثَ عَشْرَةَ رَكْعَةً
The Messenger of Allah ﷺ used to pray ten rak'ahs during the night, and would observe the witr with one rak'ah, he then prayed two rak'ahs of the dawn prayer. Thus he prayed thirteen rak'ahs in all.
كَانَ رَسُولُ اللَّهِ ﷺ يُصَلِّي مِنَ اللَّيْلِ عَشْرَ رَكَعَاتٍ وَيُوتِرُ بِسَجْدَةٍ وَيَسْجُدُ سَجْدَتَىِ الْفَجْرِ فَذَلِكَ ثَلاَثَ عَشْرَةَ رَكْعَةً