Narrated Ibn `Abbas: I never saw the Prophet 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.
Hadith ReferenceSahih Bukhari / The Book of As-Saum (The Fasting). / Hadith: 2006
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة