"Messenger of Allah (S) would pray eleven Rak'ah at night, making them off with one. When he finished them he would lay down on his right side."
أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يُصَلِّي مِنَ اللَّيْلِ إِحْدَى عَشْرَةَ رَكْعَةً يُوتِرُ مِنْهَا بِوَاحِدَةٍ فَإِذَا فَرَغَ مِنْهَا اضْطَجَعَ عَلَى شِقِّهِ الأَيْمَنِ