Sunan an-Nasa'i #1714 · The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day

Sunan an-Nasa'iMansur reported from Al-Hakam
Sunan an-Nasa'i · Book 20 · The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day
Sunan an-Nasa'i · كتاب 20 · كتاب قيام الليل وتطوع النهار
"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
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 ‏.‏
Reference : Sunan an-Nasa'i 1714In-book reference : Book 20, Hadith 117