"My beloved Prophet advised me to do three things which I will never give up, if Allah wills. He advised me to pray Duha, to pray Witr before sleeping, and to fast three days of each month."  

أَوْصَانِي حَبِيبِي ﷺ بِثَلاَثَةٍ لاَ أَدَعُهُنَّ إِنْ شَاءَ اللَّهُ تَعَالَى أَبَدًا أَوْصَانِي بِصَلاَةِ الضُّحَى وَبِالْوِتْرِ قَبْلَ النَّوْمِ وَبِصِيَامِ ثَلاَثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ  

"The Messenger of Allah enjoyed three things upon me: To sleep after praying Witr, to perform Ghusal on Friday, and to fast three days of each month." (Sahih).  

أَمَرَنِي رَسُولُ اللَّهِ ﷺ بِثَلاَثٍ بِنَوْمٍ عَلَى وِتْرٍ وَالْغُسْلِ يَوْمَ الْجُمُعَةِ وَصَوْمِ ثَلاَثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ  

"The Messenger of Allah commanded me to pray two Rakahs of Duah,nt to sleep until after praying Witr and to fast three days of each month. (Sahih).  

أَمَرَنِي رَسُولُ اللَّهِ ﷺ بِرَكْعَتَىِ الضُّحَى وَأَنْ لاَ أَنَامَ إِلاَّ عَلَى وِتْرٍ وَصِيَامِ ثَلاَثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ  

"The Messenger of Allah commanded me to sleep after praying Witr, to perform Ghusl on Friday and to fast three days of each month." (Sahih).  

أَمَرَنِي رَسُولُ اللَّهِ ﷺ بِنَوْمٍ عَلَى وِتْرٍ وَالْغُسْلِ يَوْمَ الْجُمُعَةِ وَصِيَامِ ثَلاَثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ