2020年7月10日 · What is Eid al-Adha. Eid al-Adha is known as the Feast of the Sacrifice, and at the heart of it is the story of Ibrahim. God, called Allah in Islam, appeared in a dream and told Ibrahim to sacrifice his son to prove his obedience. Ibrahim obeyed the message of the dream and took his son to the top of the mountain for the sacrifice.