´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."
Hadith ReferenceSunan an-Nasa'i / The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day / Hadith: 1715
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح
Hadith Takhrij«سنن ابن ماجہ/الإقامة 123 (1192)، (تحفة الأشراف: 18214) ، مسند احمد 6/290، 310، 321 (صحیح)»