حَدَّثَنَا زِيَادُ بْنُ أَيُّوبَ حَدَّثَنَا هُشَيْمٌ حَدَّثَنَا أَبُو بِشْرٍ عَنْ سَعِيدِ بْنِ جُبَيْرٍ عَنْ ابْنِ عَبَّاسٍ قَالَ لَمَّا قَدِمَ النَّبِيُّ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ الْمَدِينَةَ وَجَدَ الْيَهُودَ يَصُومُونَ عَاشُورَائَ فَسُئِلُوا عَنْ ذَلِکَ فَقَالُوا هَذَا الْيَوْمُ الَّذِي أَظْهَرَ اللَّهُ فِيهِ مُوسَی عَلَی فِرْعَوْنَ وَنَحْنُ نَصُومُهُ تَعْظِيمًا لَهُ فَقَالَ رَسُولُ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ نَحْنُ أَوْلَی بِمُوسَی مِنْکُمْ وَأَمَرَ بِصِيَامِهِ
سنن ابودوٗد · Hadith 2444
Ibn Abbas said: When the Prophet ﷺ came to Madina, he found the Jews observing fast on the day of Ashurah; so they were asked about it (by the Prophet). They said: This is a day on which Allah gave Moses domination over Pharaoh. We fast on it out of reverence to him. The Messenger of Allah ﷺ said: We have a closer connection with Moses than you have. He then gave orders that it should be observed.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020