Hajj pilgrims take part in symbolic 'stoning of the devil' Pilgrims make their way to the Jamarat to take part in the symbolic 'stoning of the devil,' the last major ritual of the hajj pilgrimage that heralds the start of the Eid al-Adha feast. Muslims on the annual hajj pilgrimage, one of the five pillars of Islam, made their way across the Mina valley of the western Saudi Arabian Mecca province, many carrying pebbles in plastic bottles.