حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ، حَدَّثَنَا الْحَسَنُ بْنُ عُبَيْدِ اللَّهِ، عَنْ هُنَيْدَةَ الْخُزَاعِيِّ، عَنْ أُمِّهِ، قَالَتْ دَخَلْتُ عَلَى أُمِّ سَلَمَةَ فَسَأَلْتُهَا عَنِ الصِّيَامِ فَقَالَتْ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يَأْمُرُنِي أَنْ أَصُومَ ثَلاَثَةَ أَيَّامٍ مِنْ كُلِّ شَهْرٍ أَوَّلُهَا الاِثْنَيْنِ وَالْخَمِيسِ .
Narrated Umm Salamah, Ummul Mu'minin: Hunaydah al-Khuza'i reported on the authority of her mother who said: I entered upon Umm Salamah and asked her about fasting. She said: The Messenger of Allah (PBUH) used to command me to fast three days every month beginning with Monday or Thursday. Translation Not Available
Book Ref: Sunan Abi Dawud Book 14 Hadith 2452
Web Ref: Sunan Abi Dawud Book 13 Hadith 2446