صحيح مسلم
Sahih Muslim
كتاب الصيام
The Book of Fasting
باب صَوْمِ يَوْمِ عَاشُورَاءَ:
Chapter: Fasting on the day of Ashura'
Hadith 1126
This hadith is listed as number 2645 in Maktaba Shamila
حَدَّثَنَا أَبُو كُرَيْبٍ ، حَدَّثَنَا أَبُو أُسَامَةَ ، عَنِ الْوَلِيدِ يَعْنِي ابْنَ كَثِيرٍ ، حَدَّثَنِي نَافِعٌ ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا ، حَدَّثَهُ ، أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ فِي يَوْمِ عَاشُورَاءَ : " إِنَّ هَذَا يَوْمٌ كَانَ يَصُومُهُ أَهْلُ الْجَاهِلِيَّةِ ، فَمَنْ أَحَبَّ أَنْ يَصُومَهُ فَلْيَصُمْهُ ، وَمَنْ أَحَبَّ أَنْ يَتْرُكَهُ فَلْيَتْرُكْهُ " ، وَكَانَ عَبْدُ اللَّهِ رَضِيَ اللَّهُ عَنْهُ لَا يَصُومُهُ إِلَّا أَنْ يُوَافِقَ صِيَامَهُ ،
Abdullah bin 'Umar (Allah be pleased with both of them) reported that he heard the Messenger of Allah (ﷺ) say about the day of Ashura: It is a day on which the people of pre-Islamic days observed fast. So he who liked to fast on this day should do so, and he who liked to abandon it should abandon it. 'Abdullah (RA) did not observe fast except when it coincided (with the days when he was in the habit of observing voluntary fasts during every month).
