Arabic (Original)
حَدَّثَنَا ابْنُ نُمَيْرٍ وَيَحْيَى عَنْ هِشَامٍ قَالَ أَخْبَرَنِي أَبِي عَنْ عَائِشَةَ قَالَتْ كَانَ يَوْمُ عَاشُورَاءَ يَوْمًا تَصُومُهُ قُرَيْشٌ فِي الْجَاهِلِيَّةِ وَكَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَصُومُهُ فَلَمَّا قَدِمَ الْمَدِينَةَ صَامَهُ وَأَمَرَ بِصِيَامِهِ فَلَمَّا نَزَلَ صَوْمُ رَمَضَانَ كَانَ رَمَضَانُ هُوَ الْفَرِيضَةَ وَتَرَكَ عَاشُورَاءَ فَكَانَ مَنْ شَاءَ صَامَهُ وَمَنْ شَاءَ لَمْ يَصُمْهُ.
English Translation
Aisha said: "The day of Ashura was a day that the Quraysh used to fast during the pre-Islamic period, and the Messenger of Allah (peace be upon him) used to fast it. When he came to Madinah, he fasted it and ordered (others) to fast it. When the fasting of Ramadan was prescribed, Ramadan became the obligatory fast and Ashura was abandoned. Whoever wished could fast it, and whoever wished could leave it."