Muslim pilgrims arrive to cast stones at pillars symbolizing Satan, which is part of a pilgrimage rite, in Mena November 17, 2010. Muslims around the world celebrate Eid-al-Adha, marking the end of the Haj, by slaughtering sheep, goats, cows and camels to commemorate Prophet Abraham's willingness to sacrifice his son Ismail on God's command. REUTERS/Mohammed Salem (SAUDI ARABIA - Tags: RELIGION)