A Muslim pilgrim wearing a mask due to fears of the deadly MERS virus arrives to throw pebbles at pillars during the "Jamarat" ritual, the stoning of Satan, in Mina near the holy city of Mecca, on October 15, 2013. Pilgrims pelt pillars symbolising the devil with pebbles to show their defiance on the third day of the hajj as Muslims worldwide mark the Eid al-Adha or the Feast of the Sacrifice, marking the end of the hajj pilgrimage to Mecca and commemorating Abraham's willingness to sacrifice his son Ismail on God's command in the holy city of Mecca. AFP PHOTO/FAYEZ NURELDINE        (Photo credit should read FAYEZ NURELDINE/AFP via Getty Images)