(60) باب صِيَامِ أَيَّامِ الْبِيضِ ثَلاَثَ عَشْرَةَ وَأَرْبَعَ عَشْرَةَ وَخَمْسَ عَشْرَةَ
Narrated Abu Huraira:
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. (ES)
Reference (ES): Sahih al-Bukhari 1981 (ES)
In-book reference (ES): Book 30, Hadith 88 (ES)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 31, Hadith 202 (ES)