Eid al-Adha is an important religious holiday celebrated by Muslims worldwide to commemorate the willingness of Abraham (Ibrahim) to sacrifice his son as an act of obedience to God, but instead was able to sacrifice a ram. The Festival of Sacrifice, Eid-al-Adha, immediately follows the Day of Arafat.Eid al-Adha is an Islamic festival to commemorate the willingness of Ibrahim to follow Allah's command to sacrifice his son Ishmael. Muslims around the world observe this event.