The Messenger of Allah ﷺ said: ʿAllah, may He be glorified and exalted, is One and loves that which is odd-numbered, so pray Witr, O people of the Qurʿan.ʿ
قَالَ رَسُولُ اللهِ ﷺ إِنَّ اللهَ ﷻ وِتْرٌ يُحِبُّ الْوَتْرَ فَأَوْتِرُوا يَا أَهْلَ الْقُرْآنِ