"My dearest friend advised me (to do) three things: 'To sleep after praying Witr, to fast three days each month, and to pray two rak'ahs of Fajr.'" (Using translation from Nasāʾī 1677)
أَوْصَانِي خَلِيلِي بِثَلَاثٍ الْوَتْرِ قَبْلَ النَّوْمِ وَرَكْعَتَيِ الضُّحَى وَصَوْمِ ثَلَاثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ