حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا عَبْدُ الْوَارِثِ، عَنْ يَزِيدَ الرِّشْكِ، عَنْ مُعَاذَةَ، قَالَتْ قُلْتُ لِعَائِشَةَ أَكَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَصُومُ مِنْ كُلِّ شَهْرٍ ثَلاَثَةَ أَيَّامٍ قَالَتْ نَعَمْ . قُلْتُ مِنْ أَىِّ شَهْرٍ كَانَ يَصُومُ قَالَتْ مَا كَانَ يُبَالِي مِنْ أَىِّ أَيَّامِ الشَّهْرِ كَانَ يَصُومُ .
Mu'adhah (al-'Adawiyyah) said: I asked 'Aishah: Would the Messenger of Allah (PBUH) fast three days every month ? She replied: Yes. I asked: Which days in the month he used to fast ? She replied: He did not care which days of the month he fasted. Translation Not Available
Book Ref: Sunan Abi Dawud Book 14 Hadith 2453
Web Ref: Sunan Abi Dawud Book 13 Hadith 2447