[Machine] Abu Hurairah said, "My beloved, ﷺ , advised me to fast three days every month and to perform Witr prayer before sleeping, and to pray Duha, for it is the prayer of the devout."  

سَمِعَ أَبَا هُرَيْرَةَ يَقُولُ أَوْصَانِي خَلِيلِي ﷺ بِصَوْمِ ثَلَاثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ وَبِالْوِتْرِ قَبْلَ النَّوْمِ وَبِصَلَاةِ الضُّحَىفَإِنَّهَا صَلَاةُ الْأَوَّابِينَ  

"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 أَبُو الْقَاسِمِ ﷺ بِثَلَاثٍ «الْوِتْرُ قَبْلَ النَّوْمِ وَصَلَاةُ الضُّحَى رَكْعَتَيْنِ وَصَوْمُ ثَلَاثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ»  

"Fasting three days of each month is fasting for a lifetime, and the shining days of Al-Bid, the thirteenth, fourteenth and fifteenth." (Using translation from Nasāʾī 2420)  

عَنِ النَّبِيِّ ﷺ قَالَ «صِيَامُ ثَلَاثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ صِيَامُ الدَّهْرِ أَيَّامُ الْبِيضِ ثَلَاثَ عَشْرَةَ وَأَرْبَعَ عَشْرَةَ وَخَمْسَ عَشْرَةَ»  

My friend (the Prophet ﷺ ) advised me to observe three things: (1) to fast three days a month; (2) to pray two rakʿat of Duha prayer (forenoon prayer); and (3) to pray witr before sleeping. (Using translation from Bukhārī 1981)   

أَوْصَانِي خَلِيلِي أَبُو الْقَاسِمِ ﷺ بِثَلَاثٍ «صَوْمِ ثَلَاثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ وَالْوِتْرِ قَبْلَ النَّوْمِ وَرَكْعَتَيِ الضُّحَى»  

"The Messenger of Allah commanded us to fast the three days of Al-Bid, the thirteenth, fourteenth and fifteenth." (Using translation from Nasāʾī 2422)  

أَمَرَنَا رَسُولُ اللهِ ﷺ «أَنْ نَصُومَ ثَلَاثَةَ أَيَّامٍ مِنَ كُلِّ شَهْرٍ أَيَّامِ الْبِيضَ ثَلَاثَ عَشْرَةَ وَأَرْبَعَ عَشْرَةَ وَخَمْسَ عَشْرَةَ»