The Prophet ﷺ came to Medina and saw the Jews fasting on the day of Ashura. He asked them about that. They replied, "This is a good day, the day on which Allah rescued Bani Israel from their enemy. So, Moses fasted this day." The Prophet ﷺ said, "We have more claim over Moses than you." So, the Prophet fasted on that day and ordered (the Muslims) to fast (on that day).  

قَدِمَ النَّبِيُّ ﷺ الْمَدِينَةَ فَرَأَى الْيَهُودَ تَصُومُ يَوْمَ عَاشُورَاءَ فَقَالَ مَا هَذَا قَالُوا هَذَا يَوْمٌ صَالِحٌ هَذَا يَوْمٌ نَجَّى اللَّهُ بَنِي إِسْرَائِيلَ مِنْ عَدُوِّهِمْ فَصَامَهُ مُوسَى قَالَ فَأَنَا أَحَقُّ بِمُوسَى مِنْكُمْ فَصَامَهُ وَأَمَرَ بِصِيَامِهِ  

“The Prophet ﷺ came to Al- Madinah, and he found the Jews observing a fast. He said: ‘What is this?’ They said: ‘This is the day when Allah saved Musa and drowned Pharaoh, so Musa fasted this day in gratitude.’ The Messenger of Allah ﷺ said: ‘We have more right to Musa than you do.’ So he fasted (that day) and enjoined (others) to fast it also.’”  

قَدِمَ النَّبِيُّ ﷺ الْمَدِينَةَ فَوَجَدَ الْيَهُودَ صُيَّامًا فَقَالَ مَا هَذَا؟ قَالُوا هَذَا يَوْمٌ أَنْجَى اللَّهُ فِيهِ مُوسَى وَأَغْرَقَ فِيهِ فِرْعَوْنَ فَصَامَهُ مُوسَى شُكْرًا فَقَالَ رَسُولُ اللَّهِ ﷺ نَحْنُ أَحَقُّ بِمُوسَى مِنْكُمْ فَصَامَهُ وَأَمَرَ بِصِيَامِهِ  

The Prophet ﷺ came to Medina and saw the Jews fasting on the day of Ashura. He asked them about that. They replied, "This is a good day, the day on which Allah rescued Bani Israel from their enemy. So, Moses fasted this day." The Prophet ﷺ said, "We have more claim over Moses than you." So, the Prophet fasted on that day and ordered (the Muslims) to fast (on that day). (Using translation from Bukhārī 2004)  

قَدِمَ رَسُولُ اللهِ ﷺ الْمَدِينَةَ فَرَأَى الْيَهُودَ يَصُومُونَ يَوْمَ عَاشُورَاءَ فَقَالَ مَا هَذَا الْيَوْمُ الَّذِي تَصُومُونَ؟ قَالُوا هَذَا يَوْمٌ صَالِحٌ هَذَا يَوْمٌ نَجَّى اللهُ بَنِي إِسْرَائِيلَ مِنْ عَدُوِّهِمْ قَالَ فَصَامَهُ مُوسَى قَالَ رَسُولُ اللهِ ﷺ أَنَا أَحَقُّ بِمُوسَى مِنْكُمْ قَالَ فَصَامَهُ رَسُولُ اللهِ ﷺ وَأَمَرَ بِصَوْمِهِ  

“The Prophet ﷺ came to Al- Madinah, and he found the Jews observing a fast. He said: ‘What is this?’ They said: ‘This is the day when Allah saved Musa and drowned Pharaoh, so Musa fasted this day in gratitude.’ The Messenger of Allah ﷺ said: ‘We have more right to Musa than you do.’ So he fasted (that day) and enjoined (others) to fast it also.’” (Using translation from Ibn Mājah 1734)   

قَدِمَ رَسُولُ اللهِ ﷺ الْمَدِينَةَ فَوَجَدَ يَهُودَ يَصُومُونَ يَوْمَ عَاشُورَاءَ فَقَالَ مَا هَذَا؟ فَقَالُوا هَذَا يَوْمٌ عَظِيمٌ يَوْمَ نَجَّى اللهُ مُوسَى وَأَغْرَقَ آلَ فِرْعَوْنَ فَصَامَهُ مُوسَى شُكْرًا قَالَ النَّبِيُّ ﷺ فَإِنِّي أَوْلَى بِمُوسَى وَأَحَقُّ بِصِيَامِهِ فَصَامَهُ وَأَمَرَ بِصِيَامِهِ  

[Machine] The Prophet ﷺ crossed paths with some people from the Jews who were fasting on the day of Ashura. He asked, "What is the significance of this fasting?" They replied, "This is the day on which Allah saved Moses and the Children of Israel from drowning, and drowned Pharaoh. On this day, the ark also came to rest on Mount Judi, so Noah and Moses fasted in gratitude to Allah." Upon hearing this, the Prophet ﷺ said, "I have a greater right to Moses than they do, and this fasting is more deserving for me." He then commanded his companions to observe the fast.  

مَرَّ النَّبِيُّ ﷺ بِأُنَاسٍ مِنَ الْيَهُودِ قَدْ صَامُوا يَوْمَ عَاشُورَاءَ فَقَالَ مَا هَذَا مِنَ الصَّوْمِ؟ قَالُوا هَذَا الْيَوْمُ الَّذِي نَجَّى اللهُ مُوسَى وَبَنِي إِسْرَائِيلَ مِنَ الْغَرَقِ وَغَرَّقَ فِيهِ فِرْعَوْنَ وَهَذَا يَوْمُ اسْتَوَتْ فِيهِ السَّفِينَةُ عَلَى الْجُودِيِّ فَصَامَ نُوحٌ وَمُوسَى شُكْرًا لِلَّهِ فَقَالَ النَّبِيُّ ﷺ أَنَا أَحَقُّ بِمُوسَى وَأَحَقُّ بِصَوْمِ هَذَا الْيَوْمِ فَأَمَرَ أَصْحَابَهُ بِالصَّوْمِ