Muslim pilgrims pray on a rocky hill called the Mountain of Mercy, on the Plain of Arafat near the holy city of Mecca, Saudi Arabia, in the early hours of October 25, 2012.

Muslim pilgrims pray near the holy city of Mecca, Saudi Arabia, October 25, 2012.

Crowds bow in prayer outside the mosque of the Plain of Arafat near Mecca, Saudi Arabia, October 25, 2012.

Muslim pilgrims circle the Kaaba to pray inside the Grand mosque in the holy city of Mecca, Saudi Arabia, October 23, 2012.

A man carries a sheep through a livestock market in Sanaa, October 24, 2012. Muslims around the world celebrate Eid al-Adha to mark the end of the Hajj by slaughtering sheep, goats, cows and camels.

A boy dances with a sheep at a livestock market ahead of Eid al-Adha festival in Sanaa, October 24, 2012.

Muslim pilgrims pray outside the Grand Mosque in the holy city of Mecca, Saudi Arabia, October 23, 2012.

Muslim pilgrims pray outside the Grand Mosque in Mecca, Saudi Arabia, October 23, 2012.

A Muslim pilgrim shops in a gold market in Mecca, October 23, 2012.

Muslim pilgrims leave the Grand mosque after the noon prayer in Mecca, October 22, 2012.

Muslim pilgrims pray outside the Grand mosque in Mecca, Saudi Arabia, October 22, 2012.