A man from among the people of the desert asked the Messenger of Allah (ﷺ) about prayer at night. He said:"(It is) two by two, and Witr is one rak'ah at the end of the night."
Sunan an-Nasa'i Book 20, Hadith 94
← Previous Hadith The Prophet (ﷺ) said: "Witr is one rak'ah at the end of the night."

Sunan an-Nasa'i Book 20, Hadith 93 Next 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