و حَدَّثَنِي مُحَمَّدُ بْنُ أَحْمَدَ بْنِ أَبِي خَلَفٍ حَدَّثَنَا رَوْحٌ حَدَّثَنَا أَبُو مَالِکٍ عُبَيْدُ اللَّهِ بْنُ الْأَخْنَسِ أَخْبَرَنِي نَافِعٌ عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا قَالَ ذُکِرَ عِنْدَ النَّبِيِّ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ صَوْمُ يَوْمِ عَاشُورَائَ فَذَکَرَ مِثْلَ حَدِيثِ اللَّيْثِ بْنِ سَعْدٍ سَوَائً
صحیح مسلم · Hadith 2646
Abdullah b. 'Umar (Allah be pleased with both of them) reported that he heard the Messenger of Allah ( صلی اللہ علیہ وسلم ) 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 (Allah be pleased with him) did not observe fast except when it coincided (with the days when he was in the habit of observing voluntary fasts during every month).
Sanad
و حَدَّثَنِي مُحَمَّدُ بْنُ أَحْمَدَ بْنِ أَبِي خَلَفٍ حَدَّثَنَا رَوْحٌ حَدَّثَنَا أَبُو مَالِکٍ عُبَيْدُ اللَّهِ بْنُ الْأَخْنَسِ أَخْبَرَنِي نَافِعٌ عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا