Feast of Sacrifice or Eid al-Adha annual three-day celebration of a historical event that took place thousands of years ago during the time of Prophet Abraham.
During the celebration of Eid al-Adha, Muslims often commemorate and remember Abraham's trials, by themselves slaughtering an animal such as a sheep, camel, or goat.
Eid-ul-Adha is observed on the 10th of Dhul-Hijjah, the last month of the Islamic lunar calendar.