Sunan An-Nasa'i

Sa'eed bin Abdur-Rahman bin Abza narrated from his father, that:Ubayy bin Ka'b said: ""The Messenger of Allah (ﷺ) used to recite in Witr: ""Glorify the Name of your Lord, the Most High;"" and ""Say: O you disbelievers!;' and 'Say: He is Allah, (the) One