Eid al-Adha, or the festival of sacrifice, is celebrated by Muslims around the world to commemorate Ibrahim's test of faith, with his readiness to sacrifice his son as an act of obedience to God.

At the last moment, the child was replaced with an animal. During the celebration spread over several days, Muslims slaughter livestock and distribute the meat to the poor. The Prophet Ibrahim is known to Christians and Jews as “Abraham.” 

Here is a selection of photos from this year's event:

This gallery was produced by Patrick Sison in New York.