Hadith 1169

Ibn 'Umar (May Allah be pleased with them) reported: The Prophet (PBUH) performed the night prayer in pairs (i.e., Rak'ah) and made it odd number by observing one Rak'ah (as Witr).

[Al-Bukhari and Muslim].

- وعنه قال‏:‏ كان النبي صلى الله عليه وسلم ، يصلي من الليل مثنى مثنى، ويوتر بركعة‏.‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏ ‏.‏

Reference: 1711590
In-book reference: Book 8, Hadith 1169