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ahmad:22621 – ʿAffān > Mahdī b. Maymūn > Ghaylān b. Jarīr > ʿAbdullāh b. Maʿbad al-Zimmānī > Abū Qatādah

[Machine] On the authority of the Prophet (peace and blessings be upon him), it was narrated that a man said to him, "Have you seen fasting on the day of Arafah?" The Prophet replied, "I hope that Allah will expiate the sins of the previous year and the coming year for it." The man asked, "O Messenger of Allah, what about fasting on the day of Ashura?" He replied, "I hope that Allah will expiate the sins of the previous year for it."  

أحمد:٢٢٦٢١ – حَدَّثَنَا عَفَّانُ حَدَّثَنَا مَهْدِيُّ بْنُ مَيْمُونٍ حَدَّثَنَا غَيْلَانُ بْنُ جَرِيرٍ عَنْ عَبْدِ اللهِ بْنِ مَعْبَدٍ الزِّمَّانِيِّ عَنْ أَبِي قَتَادَةَ

عَنِ النَّبِيِّ ﷺ قَالَ قَالَ لَهُ رَجُلٌ أَرَأَيْتَ صِيَامَ عَرَفَةَ؟ قَالَ أَحْتَسِبُ عِنْدَ اللهِ أَنْ يُكَفِّرَ السَّنَةَ الْمَاضِيَةَ وَالْبَاقِيَةَ قَالَ يَا رَسُولَ اللهِ أَرَأَيْتَ صَوْمَ عَاشُورَاءَ؟ قَالَ أَحْتَسِبُ عِنْدَ اللهِ أَنْ يُكَفِّرَ السَّنَةَ  

See similar narrations below:

Collected by Ibn Ḥibbān

ذِكْرُ الْبَيَانِ بِأَنَّ قَوْلَهُ ﷺ «يُكَفِّرُ السَّنَةَ وَمَا قَبْلَهَا» يُرِيدُ مَا قَبْلَهَا سَنَةً وَاحِدَةً فَقَطْ

ibnhibban:3632 – Aḥmad b. ʿAlī b. al-Muthanná > ʿUbaydullāh b. ʿUmar al-Qawārīrī > Ḥammād b. Zayd > Ghaylān b. Jarīr > ʿAbdullāh b. Maʿbad > Abū Qatādah

[Machine] About the Prophet ﷺ said, "Fasting on the day of Arafah, I hope for Allah to expiate the sins of the previous and upcoming year, and fasting on the day of Ashura, I hope for Allah to expiate the sins of the previous year."  

ابن حبّان:٣٦٣٢ – أَخْبَرَنَا أَحْمَدُ بْنُ عَلِيِّ بْنِ الْمُثَنَّى حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عُمَرَ الْقَوَارِيرِيُّ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ عَنْ غَيْلَانَ بْنِ جَرِيرٍ عَنْ عَبْدِ اللَّهِ بْنِ مَعْبَدٍ عَنْ أَبِي قَتَادَةَ

عَنِ النَّبِيِّ ﷺ قَالَ «صِيَامُ يَوْمِ عَرَفَةَ إِنِّي أَحْتَسِبَ عَلَى اللَّهِ أَنْ يُكَفِّرَ السَّنَةَ الَّتِي قَبْلَهُ وَالسَّنَةَ الَّتِي بَعْدَهُ وَصِيَامُ يَوْمِ عَاشُورَاءَ إِنِّي أَحْتَسِبُ عَلَى اللَّهِ أَنْ يُكَفِّرَ السَّنَةَ الَّتِي قَبْلَهُ»