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CARTHAGE, TUNISIA - SEPTEMBER 12: Tunisian parliamentary speaker Muhammed en-Nasir (L), Tunisian President Beji Caid Essebsi (C) and Tunisian Prime Minister Youssef Chahed (R) arrive to perform the Eid Al-Adha (Feast of Sacrifice) prayer at Malik ibn Anas Mosque in Carthage, Tunisia on September 12, 2016. Muslims worldwide celebrate Eid Al-Adha, to commemorate the holy Prophet Ibrahim’s (Prophet Abraham) readiness to sacrifice his son as a sign of his obedience to God, during which they sacrifice permissible animals, generally goats, sheep, and cows. Eid-al Adha is the one of two most important holidays in the Islamic calendar, with prayers and the ritual sacrifice of animals. (Photo by Amine Landoulsi/Anadolu Agency/Getty Images)

CARTHAGE, TUNISIA - SEPTEMBER 12: Tunisian parliamentary speaker Muhammed en-Nasir (L), Tunisian President Beji Caid Essebsi (C) and Tunisian Prime Minister Youssef Chahed (R) arrive to perform the Eid Al-Adha (Feast of Sacrifice) prayer at Malik ibn Anas Mosque in Carthage, Tunisia on September 12, 2016. Muslims worldwide celebrate Eid Al-Adha, to commemorate the holy Prophet Ibrahim’s (Prophet Abraham) readiness to sacrifice his son as a sign of his obedience to God, during which they sacrifice permissible animals, generally goats, sheep, and cows. Eid-al Adha is the one of two most important holidays in the Islamic calendar, with prayers and the ritual sacrifice of animals. 
 (Photo by Amine Landoulsi/Anadolu Agency/Getty Images)