(69) باب صِيَامِ يَوْمِ عَاشُورَاءَ
Narrated Ibn `Abbas:
I never saw the Prophet (ﷺ) seeking to fast on a day more (preferable to him) than this day, the day of 'Ashura', or this month, i.e. the month of Ramadan. (ID)
Reference (ID): Sahih al-Bukhari 2006 (ID)
In-book reference (ID): Book 30, Hadith 111 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 31, Hadith 224 (ID)