1232
Musnad AhmedIt was narrated that ‘Ali (رضي الله عنه) said:
Witr is not a must, but it is a Sunnah that the Messenger of Allah (ﷺ) established, so pray Witr, O people of the Qur"an.
Reference: Musnad Ahmad 1232
Arabic/English book : Book 5, Hadith 1232
Arabic/English book : Book 5, Hadith 1232