Sa'eed bin 'Abdur-Rahman bin Abza narrated from his father, that:
Ubayy bin Ka'b said: "The Messenger of Allah (ﷺ) used to recite in Witr: "Glorify the Name of your Lord, the Most High;" and "Say: O you disbelievers!;' and 'Say: He is Allah, (the) One.' And when he said the salam, he would say: Subhanal-Malikil-Quddus (Glory be to the Sovereign, the Most Holy) three times."
Reference: Sunan an-Nasa'i 1729 In-book : Book 20, Hadith 132 English translation : Vol. 2, Book 20, Hadith 1730
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