(54) باب مَا جَاءَ فِي صَوْمِ ثَلاَثَةِ أَيَّامٍ مِنْ كُلِّ شَهْرٍ
Abu Hurairah narrated:
"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." (FR)
Reference (FR): Jami` at-Tirmidhi 760 (FR)
In-book reference (FR): Book 8, Hadith 79 (FR)
English translation (FR): Vol. 2, Book 3, Hadith 760 (FR)