´Bahz bin Asad, said:` "Shu'bah narrated to us, from Salamah and Zubaid, from Dharr, from Ibn Abdur-Rahman bin Abza from his father that 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 taslim, he would say: Subhanal-Malikil-Quddus (Glory be to the Sovereign, the Most Holy) three times, raising his voice the third time."
Explanation & Benefits
Hafiz Muhammad Ameen
1733. Commentary: Although he would recite aloud all three times, which is how the Companions would know that it was recited three times, on the third time he would make his life-giving voice even louder and longer. (See Hadith number: 1700, 1751)
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 1733