ON THE SUBJECT OF 227 THE VIRTUE OF FASTING ON THE DAY OF ARAFAT AND ON THE 9TH and 10TH DAYS OF MUHARRAM ; FASTING ON THE DAY OF ARAFAT H 1276 "The Messenger of Allah, praise and peace be upon him, was asked about fasting on the Day of Arafat. He replied, 'It atones for the sins of the preceding year and the subsequent year.'" R 1276 Muslim with a chain up to Abu Katadah who related that the Messenger of Allah, praise and peace be upon him, said this.
باب فضل صوم يوم عرفة وعاشوراء وتاسوعاء 1250- وعن أَبي قتادة رضي الله عنه ، قَالَ : سُئِلَ رسول الله صلى الله عليه وآله وسلم عن صَومِ يَوْمِ عَرَفَةَ ، قَالَ : "يُكَفِّرُ السَّنَةَ المَاضِيَةَ وَالبَاقِيَةَ" رواه مسلم .