مُعَاذَةُ الْعَدَوِيَّةُ أنها سَأَلَتْ عَائِشَةَ زَوْجَ النبي  صلى الله عليه وسلم  أَكَانَ رسول اللَّهِ  صلى الله عليه وسلم  يَصُومُ من كل شَهْرٍ ثَلَاثَةَ أَيَّامٍ قالت نعم فقلت لها من أَيِّ أَيَّامِ الشَّهْرِ كان يَصُومُ قالت لم يَكُنْ يُبَالِي من أَيِّ أَيَّامِ الشَّهْرِ يَصُومُ

Mu‘adhah al-‘Adwiyyah asked ‘A’ishah (rta), wife of the Prophet (sws): “Did God’s Messenger (sws) fast for three days every month?” She replied: “Yes.” I [then] asked: “Which days of the month would he fast?” She replied: “He would not be specific in this regard and would fast whichever [three] days he wanted to.”[1]



[1]. Ibid., vol.2, 818, (no. 1160).