Sayyida Umm Salamah (may Allah be pleased with her) narrates that the Messenger of Allah (peace and blessings be upon him and his family) used to perform seven and five rak'ahs of Witr, and he would not separate them with salam or speech.
Hadith Referenceالفتح الربانی / أبواب صلاة الليل والوتر / 2211
Hadith Gradingمحدثین:ضعیف
Hadith Takhrij«اسناده ضعيف لانقطاعه، مِقسم لم يسمع من ام سلمة- أخرجه النسائي: 3/ 239 ، (انظر مسند أحمد ترقيم الرسالة: 26486 ترقیم بيت الأفكار الدولية: 27019»
Brief Explanation
Benefits: … From these ahadith it is established that performing five rak‘ahs of witr is a Sunnah act, provided that these rak‘ahs are performed with one salam and without the middle tashahhud.