´It was narrated that ‘Ali said:` “At every part of the night the Messenger of Allah (ﷺ) prayed Witr, at the beginning and in the middle, and finally his Witr was just before dawn.”
Hadith ReferenceSunan Ibn Majah / Establishing the Prayer and the Sunnah Regarding Them / Hadith: 1186
Hadith Gradingالألبانی:حسن صحيح | زبیر علی زئی:إسناده حسن