The Prophet ﷺ ordered a man from the tribe of Bani Aslam to announce amongst the people that whoever had eaten should fast the rest of the day, and whoever had not eaten should continue his fast, as that day was the day of 'Ashura' .  

أَمَرَ النَّبِيُّ ﷺ رَجُلاً مِنْ أَسْلَمَ أَنْ أَذِّنْ فِي النَّاسِ أَنَّ مَنْ كَانَ أَكَلَ فَلْيَصُمْ بَقِيَّةَ يَوْمِهِ وَمَنْ لَمْ يَكُنْ أَكَلَ فَلْيَصُمْ فَإِنَّ الْيَوْمَ يَوْمُ عَاشُورَاءَ  

Messenger of Allah ﷺ said to a man from the tribe of Al-Aslam, "Proclaim among your people (or the people) on the day of 'Ashura' (tenth of Muharram), 'Whosoever has eaten anything should fast for the rest of the day; and whoever has not eaten anything, should complete his fast.' "  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لِرَجُلٍ مِنْ أَسْلَمَ أَذِّنْ فِي قَوْمِكَ أَوْ فِي النَّاسِ يَوْمَ عَاشُورَاءَ أَنَّ مَنْ أَكَلَ فَلْيُتِمَّ بَقِيَّةَ يَوْمِهِ وَمَنْ لَمْ يَكُنْ أَكَلَ فَلْيَصُمْ  

Messenger of Allah ﷺ said to a man from the tribe of Al-Aslam, "Proclaim among your people (or the people) on the day of 'Ashura' (tenth of Muharram), 'Whosoever has eaten anything should fast for the rest of the day; and whoever has not eaten anything, should complete his fast.' " (Using translation from Bukhārī 7265)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ لِرَجُلٍ مِنْ أَسْلَمَ أَذِّنْ فِي قَوْمِكَ أَوْ فِي النَّاسِ يَوْمَ عَاشُورَاءَ مَنْ أَكَلَ فَلْيَصُمْ بَقِيَّةَ يَوْمِهِ وَمَنْ لَمْ يَكُنْ أَكَلَ فَلْيَصُمْ  

[Machine] "That the Messenger of Allah ﷺ said on the day of Ashura, 'O people, whoever among you wishes to fast this day may do so, and whoever does not wish to fast, let him complete his fast. And whoever eats, let him continue his fast for the rest of the day.'"  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ يَوْمَ عَاشُورَاءَ «يَا أَيُّهَا النَّاسُ مَنْ كَانَ مِنْكُمْ يُرِيدُ أَنْ يَصُومَ هَذَا الْيَوْمَ فَلْيَصُمْهُ وَمَنْ لَمْ يَكُنْ أَكَلَ فَلْيُتِمَّ صَوْمَهُ وَمَنْ أَكَلَ فَلْيَصُمْ بَقِيَّةَ يَوْمِهِ»  

[Machine] The Prophet Muhammad ﷺ said on the day of Ashuraa: "O people, whoever of you eats should not eat anything for the rest of the day, and whoever intends to fast should observe the fast."  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ يَوْمَ عَاشُورَاءَ «أَيُّهَا النَّاسُ مَنْ كَانَ مِنْكُمْ أَكَلَ فَلَا يَأْكُلْ بَقِيَّةَ يَوْمِهِ وَمَنْ نَوَى مِنْكُمُ الصَّوْمَ فَلْيَصُمْهُ»  

"أَيُّهَا النَّاسُ مَن كَانَ أَكَلَ مِنْكُمْ فَلَا يَأكُلْ بَقِيَّةَ يَوْمِهِ، وَمَنْ نَوَى مِنْكُمْ الصَّوْمَ فَليَصُمْه" قَالهَ يَوْمَ عَاشُورَاءَ ".  

"مَنْ أَكَلَ مِنْكُمْ يَوْمَ عَاشُورَاءَ فلا بَقيَّةَ يَوْمِه، وَمَنْ لَمْ يَأكُلْ فَليُتِمَّ صَوْمَه".