(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)." (JA)
Reference (JA): Sunan an-Nasa'i 1676 (JA)
In-book reference (JA): Book 20, Hadith 79 (JA)
English translation (JA): Vol. 2, Book 20, Hadith 1677 (JA)