(4) باب مَا يُقْرَأُ فِي الْوِتْرِ
Narrated Ubayy ibn Ka'b:
The Messenger of Allah (ﷺ) used to observe witr with (reciting) "Glorify the name of thy Lord, the most High" (Surah 87), "Say O disbelievers" (Surah 109), and "Say, He is Allah, the One, Allah, the eternally besought of all" (112).
Reference: Sunan Abi Dawud 1423
In-book reference: Book 8, Hadith 8
English translation: Book 8, Hadith 1418