Around the world, Muslims gather to celebrate Eid al-Adha

Islam's second biggest annual celebration brought Muslims together in traditional style
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Eid al-Adha, Islam's second biggest annual festival, was celebrated by Muslims worldwide this week, bringing families, friends and religious groups together in cities. Above: Pakistani Muslim women raise their hands to pray, after offering Eid prayers. (AFP/Getty Images)
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Pakistani Muslims hug each others after Eid prayers in Karachi. (AFP/Getty Images)
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The festival commemorates the willingness of Abraham to sacrifice his son Ismail as an act of obedience to God, before God intervened to provide him with a sheep to sacrifice instead.(AFP/Getty Images)
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Egyptian Muslims attend prayers as they celebrate on the first day of Eid al-Adha, on the main street the Nile Delta city of Mansura, some 120 north of Cairo. (AFP/Getty Images)
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Egypt Muslims celebrate the festival, also known as the Feast of the Sacrifice, which marks the end of the hajj pilgrimage to Mecca. (AFP/Getty Images)
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Pakistani Muslims offer Eid prayers at the Badshahi Mosque in Lahore. (AFP/Getty Images)
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A Pakistani paramilitary soldier stands guard as Muslims offer Eid prayers at a mosque. (AFP/Getty Images)
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Quetta. More Pakistani Muslims offer Eid prayers. (AFP/Getty Images)
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A Muslim pilgrim reads the holy Quran in Mina, outside the holy city of Makkah in Saudi Arabia, on the second day of the Eid al-Adha, during the annual hajj pilgrimage. (AFP/Getty Images)
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Other Muslim pilgrims read the holy Quran in Mina on the second day of the Eid. (AFP/Getty Images)
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An aerial view shows Muslim pilgrims walking around the Kaaba in the Grand Mosque of the holy city of Mecca during the annual Hajj pilgrimage rituals. (AFP/Getty Images)
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A Muslim pilgrim prays after throwing pebbles at pillars during the 'Jamarat' ritual, the stoning of Satan, in Mina. Pilgrims pelted pillars (which symbolise the devil) with pebbles for the second day to show their defiance. (AFP/Getty Images)
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The holy day is also marked with mass animal sacrifices. (AFP/Getty Images)