Fasting on the day of Arafah

Fasting on the day of ‘Arafah is a confirmed Sunnah for those who are not performing Hajj. 

عَنْ أَبِي قَتَادَةَ رَضِيَ الله عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: "صِيَامُ يَوْمِ عَرَفَةَ أَحْتَسِبُ عَلَى اللَّهِ أَنْ يُكَفِّرَ السَّنَةَ الَّتِي قَبْلَهُ وَالسَّنَةَ الَّتِي بَعْدَهُ"

It was narrated from Abu Qataadah (ra) that the Messenger of Allaah (saw) was asked about fasting on the day of ‘Arafah and he said: “It expiates for the past and coming years.” 


(Muslim1162).