[Machine] The Messenger of Allah ﷺ used to perform Tahiyyatul-Wudu (a prayer after performing ablution) consisting of five units (rak'ahs). He would not sit down except in the fifth unit, and he would only give the salaam (conclude the prayer) in the fifth unit.
«أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ» يُوتِرُ بِخَمْسِ رَكَعَاتٍ وَلَا يَجْلِسُ إِلَّا فِي الْخَامِسَةِ وَلَا يُسَلِّمُ إِلَّا فِي الْخَامِسَةِ