Today is the start of Eid al-Adha, or feast of sacrifice, for Muslims around the world.

Here in Toronto, thousands are expected to attend a celebration at the Better Living Centre at Exhibition Place.

The celebration starts with prayers at 10 a.m. and runs right through the day with a carnival, food and activities for children.

In Mecca, Saudi Arabia, thousands of Muslims from around the world are gathered for the symbolic "stoning of the devil."

The ritual marks the start of Eid al-Adha, when Muslims slaughter lambs to feed the hungry, and it takes place on the second day of the annual four-day Hajj pilgrimage, a central pillar of their faith.

Muslims believe the Hajj traces the paths of the prophets Abraham, Ishmael, and Muhammad. According to Islam, each able-bodied believer must make the pilgrimage at least once in their lifetime.

Muslims believe the hajj traces the paths of the Prophets Abraham, Ishmael and Muhammad. The hajj typically concludes as it began, with a set of rituals at the Kaaba, the cube-shaped structure in Mecca's Grand Mosque that observant Muslims around the world face in prayer five times a day.

Mount Arafat, about 20 kilometres east of Mecca, is a required stop for Muslims during the hajj.

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