وَعَنْهُ أَيْضًا عَنْ أُمِّهِ قَالَتْ: دَخَلْتُ عَلَى أُمِّ سَلَمَةَ رَضِيَ اللَّهُ عَنْهَا فَسَأَلْتُهَا عَنِ الصِّيَامِ، فَقَالَتْ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَأْمُرُنِي أَنْ أَصُومَ ثَلَاثَةَ أَيَّامٍ مِنْ كُلِّ شَهْرٍ، أَوَّلُهَا الْإِثْنَيْنِ وَالْجُمُعَةُ وَالْخَمِيسُ
Huneida narrates from her mother that she went to Sayyida Umm Salama (may Allah be pleased with her) and asked her about fasting. She said: The Messenger of Allah (peace and blessings be upon him) instructed me to fast on the first Monday, Friday, and Thursday of every month.