Arafah Fasting

The holy Prophet Sallallahu Alaihiwasallam said:

The observance of three days' fast every Month and that of Ramadan every year is a perpetual fasting. I seek from Allah that fasting on the day of 'Arafa may atone for the sins of the preceding and the coming years and I seek from Allah that fasting on the day of Ashura may atone for the sins of the preceding year.

Narrated by Abu Qatada (RadhiAllahu Anhu)​​

Book - Sahih Muslim - Book 14, Number 2803