“Witr is Haqq.* Whoever wishes let him pray Witr with five (Rak’ah), and whoever wishes let him pray Witr with three (Rak’ah), and whoever wishes let him pray Witr with one (Rak’ah).” (Using translation from Ibn Mājah 1190)
قَالَ رَسُولُ اللَّهِ ﷺ «الْوِتْرُ حَقٌّ فَمَنْ شَاءَ فَلْيُوتِرْ بِخَمْسٍ وَمَنْ شَاءَ فَلْيُوتِرْ بِثَلَاثٍ وَمَنْ شَاءَ فَلْيُوتِرْ بِوَاحِدَةٍ»