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I never saw the Prophet (ﷺ) seeking to fast on a day that he favored more than another except this day, the day of 'Ashura', and this month, meaning the month of Ramadan.

I do not know Allah's Messenger (ﷺ) singling out any day's fast and considering it more excellent than another, except this day (the day of Ashura) and this month, meaning the month of Ramadan.

he heard Ibn 'Abbas, when he was asked about the fast of 'Ashura' say: "I do not know that the Prophet (ﷺ) fasted any day because of its virtue, except this day" meaning the month of Ramadan and the day of Ashura.'

I did not see the Messenger of Allah (ﷺ) making sure to fast any day, seeking its virtue and superiority over other days, apart from this day - meaning ‘Ashoora' - or Ramadan.