Sunan An-Nasa'i

Ata bin As-Sa'ib reported from Sa'eed bin 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