Sahih al-Bukhari
1981
Chapter 31 · Fastingصِيَامِ أَيَّامِ الْبِيضِ ثَلاَثَ عَشْرَةَ وَأَرْبَعَ عَشْرَةَ وَخَمْسَ عَشْرَةَ
حَدَّثَنَا أَبُو مَعْمَرٍ، حَدَّثَنَا عَبْدُ الْوَارِثِ، حَدَّثَنَا أَبُو التَّيَّاحِ، قَالَ حَدَّثَنِي أَبُو عُثْمَانَ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ أَوْصَانِي خَلِيلِي صلى الله عليه وسلم بِثَلاَثٍ صِيَامِ ثَلاَثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ، وَرَكْعَتَىِ الضُّحَى، وَأَنْ أُوتِرَ قَبْلَ أَنْ أَنَامَ.
Translation
Not reworked yet
The Arabic text and the translations come from our previous collection: English from hadithapi.com, German and Turkish machine-translated (Gemini) and unreviewed. A new translation from the Arabic with the chain of narration will follow.
To fast the 13th, 14th and 15th of the lunar months.
My friend (the Prophet (ﷺ) ) advised me to observe three things: (1) to fast three days a month; (2) to pray two rak`at of Duha prayer (forenoon prayer); and (3) to pray witr before sleeping.