The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day
20/41. Chapter:
How to pray witr with five rak'ahs, and the differences reported from Al-Hakam in the hadith about Witr
Sunan an-Nasai
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنِ الْحَكَمِ، عَنْ مِقْسَمٍ، عَنْ أُمِّ سَلَمَةَ، قَالَتْ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُوتِرُ بِخَمْسٍ وَبِسَبْعٍ لاَ يَفْصِلُ بَيْنَهَا بِسَلاَمٍ وَلاَ بِكَلاَمٍ .
Mansur reported from Al-Hakam, from Miqsam, that Umm Salamah said: "The Messenger of Allah (ﷺ) used to pray witr with five and seven rak'ahs which he did not separate with any taslim nor talk."
Reference : Sunan an-Nasa'i 1714In-book reference : Book 20, Hadith 117English translation : Vol. 2, Book 20, Hadith 1715