(2) باب فِيمَنْ لَمْ يُوتِرْ
Narrated Buraydah ibn al-Hasib:
I heard the Messenger of Allah (ﷺ) say: The witr is a duty, so he who does not observe it does not belong to us; the witr is a duty, so he who does not observe it does not belong to us; the witr is a duty, so he who does not observe it does not belong to us. (ES)
Reference (ES): Sunan Abi Dawud 1419 (ES)
In-book reference (ES): Book 8, Hadith 4 (ES)
English translation (ES): Book 8, Hadith 1414 (ES)