"Messenger of Allah would recite during Al-Witr: "Glorify the Name of your Lord the Most High' and, 'Say: O you disbelievers!' and, 'Say: Allah is One,' in each Rak'ah."  

كَانَ النَّبِيُّ ﷺ يَقْرَأُ فِي الْوِتْرِ بِ (سَبِّحِ اسْمَ رَبِّكَ الأَعْلَى ) وَ (قُلْ يَا أَيُّهَا الْكَافِرُونَ ) وَ (قُلْ هُوَ اللَّهُ أَحَدٌ ) فِي رَكْعَةٍ رَكْعَةٍ قَالَ وَفِي الْبَابِ عَنْ عَلِيٍّ وَعَائِشَةَ وَعَبْدِ الرَّحْمَنِ بْنِ أَبْزَى عَنْ أُبَىِّ بْنِ كَعْبٍ وَيُرْوَى عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبْزَى عَنِ النَّبِيِّ ﷺ  

"I asked Aishah about what (recitation) Messenger of Allah would perform Al-Witr with. She said: 'In the first he would recite: Glorify the Name of your Lord the Most High, in the second: Say: O you disbelievers!, and in the third: Say: Allah is One" and, Al-Mu'awwidhatain.'"  

سَأَلْنَا عَائِشَةَ بِأَىِّ شَيْءٍ كَانَ يُوتِرُ رَسُولُ اللَّهِ ﷺ قَالَتْ كَانَ يَقْرَأُ فِي الأُولَى بِ (سَبِّحِ اسْمَ رَبِّكَ الأَعْلَى ) وَفِي الثَّانِيَةِ بِ(قُلْ يَا أَيُّهَا الْكَافِرُونَ ) وَفِي الثَّالِثَةِ بِ (قُلْ هُوَ اللَّهُ أَحَدٌ ) وَالْمُعَوِّذَتَيْنِ