Sunan An-Nasa'i
Hadith #1731
It was narrated from Ibn Abdur-Rahman bin Abza from his father that: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