Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: The Noble Prophet (peace and blessings be upon him) used to pray three rak‘ahs of Witr; in the first rak‘ah he would recite «سَبِّحِ اسْمَ رَبِّكَ الْأَعْلَى», in the second rak‘ah «قُلْ يَا أَيُّهَا الْكَافِرُونَ», and in the third rak‘ah «قُلْ هُوَ اللَّهُ أَحَدٌ».