Narrated Salama bin Al-Akwa`:
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' .
Reference | : Sahih al-Bukhari 2007 |
In-book reference | : Book 30, Hadith 112 |
USC-MSA web (English) reference | : Vol. 3, Book 31, Hadith 225 |
(deprecated numbering scheme) |