"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, elongating his words the third time."
كَانَ رَسُولُ اللَّهِ ﷺ يُوتِرُ بِ { سَبِّحِ اسْمَ رَبِّكَ الأَعْلَى } وَ { قُلْ يَا أَيُّهَا الْكَافِرُونَ } وَ { قُلْ هُوَ اللَّهُ أَحَدٌ } وَكَانَ إِذَا سَلَّمَ وَفَرَغَ قَالَ سُبْحَانَ الْمَلِكِ الْقُدُّوسِ ثَلاَثًا طَوَّلَ فِي الثَّالِثَةِ وَرَوَاهُ عَبْدُ الْمَلِكِ بْنُ أَبِي سُلَيْمَانَ عَنْ زُبَيْدٍ وَلَمْ يَذْكُرْ ذَرًّا