"The Messenger of Allah (ﷺ) said: 'Prayer at night is two by two, and witr is one rak'ah.'"
Sunan an-Nasa'i Book 20, Hadith 96
← Previous Hadith The Messenger of Allah (ﷺ) said: "Prayer at night is two by two, then when you want to finish, pray one rak'h which will make the total number that you prayed odd."

Sunan an-Nasa'i Book 20, Hadith 95 Next Hadith → A man asked the Messenger of Allah (ﷺ) about prayer at night and the Messenger of Allah (ﷺ) said: "Prayer at night is two by two, then if one of you fears that dawn will break, pray one rak'ah to make the total number that he prayed odd."

Sunan an-Nasa'i Book 20, Hadith 97