[Machine] The Messenger of Allah ﷺ used to perform the night prayer (Tahajjud) with three (rak'ahs), reciting in the first rak'ah: "Glorify the name of your Lord, the Most High" (Surah Al-A'la), in the second rak'ah: "Say, O disbelievers" (Surah Al-Kafirun), and in the third rak'ah: "Say, He is Allah, the One" (Surah Al-Ikhlas). He used to prolong his recitation before bowing (ruku') and when he would finish the prayer, he would say: "Glory be to the King, the Most Holy" three times, raising his voice so that it is heard in the Hereafter, saying: "O Lord of the angels and the Rooh (Jibreel)" (Hadith Sahih Muslim).
كَانَ رَسُولُ اللهِ ﷺ يُوتِرُ بِثَلَاثٍ بِسَبِّحِ اسْمَ رَبِّكَ الْأَعْلَى وَقُلْ يَا أَيُّهَا الْكَافِرُونَ وَقُلْ هُوَ اللهُ أَحَدٌ وَيَقْنُتُ قَبْلَ الرُّكُوعِ فَإِذَا سَلَّمَ قَالَ سُبْحَانَ الْمَلِكِ الْقُدُّوسِ ثَلَاثَ مَرَّاتٍ يَمُدُّ بِهَا صَوْتَهُ فِي الْآخِرَةِ يَقُولُ رَبِّ الْمَلَائِكَةِ وَالرُّوحِ 4863 أَخْبَرَنَا أَبُو عَلِيٍّ الرُّوذْبَارِيُّ أَنْبَأَ أَبُو بَكْرٍ مُحَمَّدُ بْنُ بَكْرٍ قَالَ قَالَ أَبُو دَاوُدَ سُلَيْمَانُ بْنُ الْأَشْعَثِ السِّجِسْتَانِيُّ حَدِيثَ سَعِيدٍ عَنْ قَتَادَةَ