It was narrated from Ibn ‘Abbas that the Messenger of Allah (ﷺ) used to perform Witr and recite:“Glorify the Name of your Lord the Most High,” [Al-A’la (87)] “Say: O you disbelievers!” [Al-Kafirun (109)] and ‘Say: Allah is One.”. [Al-Ikhlas (112)] Another chain with similar wording

English translation · Sunan Ibn Majah