[Machine] The Prophet ﷺ said, "Fasting on the day of Arafah makes up for the sins of two years, and fasting on the day of Ashura makes up for the sins of one year." [223] 2820 It was narrated from 'Amr bin 'Ali that Abu Dawood told us, who told us that Hammam said, "Ata' told us, 'O Hammam, this is a hadith that came to us from your region.' Saleh Abu Al-Khalil narrated to me from Harmalah bin Iyas from Abu Qatadah that the Messenger of Allah ﷺ said something similar."  

عَنِ النَّبِيِّ ﷺ قَالَ «يَعْدِلُ صَوْمُ يَوْمِ عَرَفَةَ سَنَتَيْنِ وَصَوْمُ يَوْمِ عَاشُورَاءَ يَعْدِلُ سَنَةً» [223] 2820 أَخْبَرَنَاَ عَمْرُو بْنُ عَلِيٍّ قَالَ حَدَّثَنَا أَبُو دَاوُدَ قَالَ حَدَّثَنَا هَمَّامٌ قَالَ قَالَ لِي عَطَاءٌ يَا هَمَّامٌ هَذَا حَدِيثٌ جَاءَنَا مِنْ قِبَلِكُمْ حَدَّثَنِي صَالِحٌ أَبُو الْخَلِيلِ عَنْ حَرْمَلَةَ بْنِ إِيَاسٍ عَنْ أَبِي قَتَادَةَ قَالَ قَالَ رَسُولُ اللهِ ﷺ نَحْوَهُ