عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ أَوْتَرَ بِثَلَاثٍ بِـ {سَبِّحِ اسْمَ رَبِّكَ الْأَعْلَى} وَ{قُلْ يَا أَيُّهَا الْكَافِرُونَ} وَ{قُلْ هُوَ اللَّهُ أَحَدٌ}
It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) performed three Witr and recited Surah Al-A'la, Surah Al-Kafiroon, and Surah Al-Ikhlas in them.