حَدَّثَنَا عَفَّانُ حَدَّثَنَا عَبْدُ الْوَارِثِ حَدَّثَنَا أَيُّوبُ عَنْ عَبْدِ اللَّهِ بْنِ سَعِيدِ بْنِ جُبَيْرٍ عَنْ أَبِيهِ عَنِ ابْنِ عَبَّاسٍ قَالَ قَدِمَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ الْمَدِينَةَ فَرَأَى الْيَهُودَ يَصُومُونَ يَوْمَ عَاشُورَاءَ فَقَالَ مَا هَذَا الْيَوْمُ الَّذِي تَصُومُونَ قَالُوا هَذَا يَوْمٌ صَالِحٌ هَذَا يَوْمٌ نَجَّى اللَّهُ بَنِي إِسْرَائِيلَ مِنْ عَدُوِّهِمْ قَالَ فَصَامَهُ مُوسَى قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَا أَحَقُّ بِمُوسَى مِنْكُمْ قَالَ فَصَامَهُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَأَمَرَ بِصَوْمِهِ
مسند امام احمد بن حنبل · Hadith 2644
It was narrated that Ibn 'Abbas (RA) said: The Messenger of Allah (PBUH) came to Madinah and saw the Jews fasting on the day of 'Ashoora'. He said: "What is this day on which you fast?" They said: This is a good day; it is the day on which Allah saved the Children of Israel from their enemy, so Moosa fasted on this day. The Messenger of Allah (PBUH) said: "I am more entitled to (be close to) Moosa than you." So the Messenger of Allah (PBUH) fasted on that day and enjoined fasting thereon.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020