Muslims are marking Eid al-Adha, commemorating the willingness of the prophet Ibrahim — or Abraham as he is known in the Bible — to sacrifice his son in accordance with God's will, though in the end God provided him with a sheep to sacrifice instead.

On the first day of Eid al-Adha, Muslims slaughter sheep, cattle and other livestock, and give part of the meat to the poor. Parents often buy new clothes for their children for the holiday.

In this picture gallery, IBTimesUK looks at how Muslims around the world have celebrated Eid al-Adha.

Eid al-adha
Russian Interior Ministry members stand guard as Muslims attend an Eid al-Adha mass prayer in MoscowReuters
Eid al-adha
A camel is led behind a three-wheeled motorcycle after it was bought at a market to be sacrificed for Eid al-Adha in Lahore, PakistanAFP
Eid al-adha
A boy waits to perform prayers for the Muslim festival of Eid-al-Adha in Kibera slum in Kenya's capital NairobiReuters
Eid al-adha
Children, accompanied by their father, walk together ahead of performing prayers on the first day of Eid al-Adha in the Duma neighbourhood in Damascus, SyriaReuters
Eid al-adha
Smoke rises from a cemetery in Damascus after what activists said was shelling by forces loyal to Syria's President Bashar al-Assad while people were visiting the graves of their relatives on the first day of Eid al-AdhaReuters
Eid al-adha
People ride a Ferris wheel at an amusement park in the port city of Sidon, southern LebanonReuters
Eid al-adha
A Muslim pilgrim has his son's head shaved after casting seven stones at a pillar that symbolises Satan during the annual Hajj pilgrimage in Mina, near MeccaReuters
Eid al-adha
Muslim pilgrims pray after they cast stones at pillars symbolising Satan, during the annual Haj pilgrimage on Eid al-Adha in Mina, near the holy city of MeccaReuters
Eid al-adha
A man carries a sacrificial sheep on a motorcycle in the Pakistani city of LahoreAFP
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Men lead cows at a cattle market the day before Eid-al-Adha in Dhaka, BangladeshReuters
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A butcher tests his knife before he slaughters a cow during celebrations of Eid al-Adha in Jakarta, IndonesiaGetty
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Indonesian Muslims arrive for Eid al-Adha prayers at Sunda Kelapa Port in JakartaGetty
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Children play with balloons after Eid al-Adha prayers at Sunda Kelapa Port in Jakarta, IndonesiaGetty
Eid al-adha
Indonesian girls arrive to attend a prayer session at Parangkusumo beach in Yogyakarta, IndonesiaGetty
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Iraqi children pose as they as they celebrate the Muslim festival of Eid-al-Adha in BaghdadReuters
Eid al-adha
Egyptians take a ride at an amusement park during the Muslim holiday of Eid al-Adha in CairoAFP
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Palestinian children have their picture taken in front of the Dome of the Rock on the compound known to Muslims as al-Haram al-Sharif and to Jews as Temple Mount in Jerusalem's Old CityReuters
Eid al-adha
A Palestinian man from Gaza City prays outside the Dome of the Rock during a visit to the Al-Aqsa mosque compound, Islam's third holiest site, in the Old City of JerusalemAFP
Eid al-adha
Palestinian women from Gaza pray inside the Dome of the Rock in Jerusalem's Old CityReuters
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Two girls pose for a photo after Eid prayers at a mosque in Adjame, Abidjan, Ivory CoastReuters
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Muslims offer Eid al-Adha prayers at the Jama Masjid (Grand Mosque) in the old quarters of DelhiReuters
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A man attends prayers marking the Islamic festival of Eid al-Adha at an open field in Lagos, NigeriaReuters
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A Palestinian boy stands among people performing their Eid al-Adha prayers in Gaza CityReuters