On the first days of Eid al-Adha, the guests of the Most Merciful stone the pillars.

Pilgrims began the ritual of stoning the pillars in Mina Valley, the final major rite of the Hajj pilgrimage, today on Friday, coinciding with the first day of Eid al-Adha for Muslims around the world.
Since dawn, more than 1.6 million pilgrims have started stoning the seven pebbles at each of the three walls symbolizing the devil in Mina Valley, located on the outskirts of the holy city of Mecca.
Pilgrims from around 180 countries have gathered in the Meccan sanctuary to perform the Eid prayer.