It is narrated from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) used to recite Surah Al-A'la, Surah Al-Kafiroon, and Surah Al-Ikhlas in the Witr prayer.
Hadith Referenceالفتح الربانی / أبواب صلاة الليل والوتر / 2223