(27) باب الأَمْرِ بِالْوِتْرِ
It was narrated that Ali, may Allah (SWT) be pleased with him, said:
"Witr is not essential like the obligatory prayers, but it is the sunnah of the Messenger of Allah (ﷺ)." (AR)
Reference (AR): Sunan an-Nasa'i 1676 (AR)
In-book reference (AR): Book 20, Hadith 79 (AR)
English translation (AR): Vol. 2, Book 20, Hadith 1677 (AR)