The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day
20/44. Chapter:
How to pray witr with eleven rak'ahs
Sunan an-Nasai
أَخْبَرَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ، قَالَ حَدَّثَنَا مَالِكٌ، عَنِ الزُّهْرِيِّ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ يُصَلِّي مِنَ اللَّيْلِ إِحْدَى عَشْرَةَ رَكْعَةً وَيُوتِرُ مِنْهَا بِوَاحِدَةٍ ثُمَّ يَضْطَجِعُ عَلَى شِقِّهِ الأَيْمَنِ .
It was narrated from Aishah that: The Prophet (ﷺ) used to pray eleven rak'ahs at night, of which one was witr, then he would lie down on his right side.
Reference : Sunan an-Nasa'i 1726In-book reference : Book 20, Hadith 129English translation : Vol. 2, Book 20, Hadith 1727