"The Messenger of Allah took a covenant from me for three: To not sleep except after performing Witr, to fast three days of every month, and to perform the Duha prayer."
عَهِدَ إِلَىَّ النَّبِيُّ ﷺ ثَلاَثَةً أَنْ لاَ أَنَامَ إِلاَّ عَلَى وِتْرٍ وَصَوْمَ ثَلاَثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ وَأَنْ أُصَلِّيَ الضُّحَى