Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims pray outside Namira Mosque on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims pray outside Namira Mosque on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims pray outside Namira Mosque on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims, some holding parasols, pray on Mount of Mercy in Arafat ahead of the Eid al-Adha festival in the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims, some holding parasols, pray on Mount of Mercy in Arafat ahead of the Eid al-Adha festival in the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims pray on Mount of Mercy in Arafat ahead of the Eid al-Adha festival in the holy city of Mecca, Saudi Arabia August 10, 2019.

A Muslim pilgrim prays on Mount of Mercy in Arafat ahead of the Eid al-Adha festival in the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

A Muslim pilgrim prays on Mount of Mercy in Arafat ahead of the Eid al-Adha festival in the holy city of Mecca, Saudi Arabia August 10, 2019. Image used for illustrative purpose.

Muslim pilgrims arrive to pray outside Namira Mosque on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

A Muslim pilgrim, prays on Mount of Mercy in Arafat ahead of the Eid al-Adha festival in the holy city of Mecca, Saudi Arabia August 10, 2019. Image used for illustrative purpose

A Muslim pilgrim prays on Mount of Mercy in Arafat ahead of the Eid al-Adha festival in the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims leave after a pray outside Namira Mosque on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims walk near Mount of Mercy in Arafat ahead of the Eid al-Adha festival in the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.

Muslim pilgrims gather on Mount Mercy on the plains of Arafat during the annual haj pilgrimage, outside the holy city of Mecca, Saudi Arabia August 10, 2019.