Explanation

Fasting on the two days of Eid (`Eidul Fitr and `Eidul Adha.) is haraam. It is also haraam to fast on the days of al-Tashreeq which are the three days after Eid al-Adha (the 11th, 12th and 13th of Dhu’l-Hijjah) because the Prophet (peace and blessings of Allaah be upon him) said: “The days of al-Tashreeq are days of eating, drinking and remembering Allaah.” Narrated by Muslim, 1141.