[Machine] The Prophet Muhammad ﷺ used to pray thirteen units at night, with five as odd-numbered (witr) prayers. He would not sit except during the fifth unit before making the salutation (salam).
أَنَّ رَسُولَ اللهِ ﷺ كَانَ يُصَلِّي مِنَ اللَّيْلِ ثَلَاثَ عَشْرَةَ رَكْعَةً يُوتِرُ بِخَمْسٍ لَا يَجْلِسُ إِلَّا فِي الْخَامِسَةِ فَيُسَلِّمُ