Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) used to recite Surah Al-A'la, Surah Al-Kafiroon, and Surah Al-Ikhlas in the Witr prayer. When he would finish with salam, he would recite «سُبْحَانَ الْمَلِكِ الْقُدُّوس» (Glory is to the One Who is the Sovereign and free from all defects) three times.