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.
Russian Interior Ministry members stand guard as Muslims attend an Eid al-Adha mass prayer in Moscow
Reuters
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, Pakistan
AFP
A boy waits to perform prayers for the Muslim festival of Eid-al-Adha in Kibera slum in Kenya's capital Nairobi
Reuters
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, Syria
Reuters
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-Adha
Reuters
People ride a Ferris wheel at an amusement park in the port city of Sidon, southern Lebanon
Reuters
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 Mecca
Reuters
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 Mecca
Reuters
A man carries a sacrificial sheep on a motorcycle in the Pakistani city of Lahore
AFP
Men lead cows at a cattle market the day before Eid-al-Adha in Dhaka, Bangladesh
Reuters
A butcher tests his knife before he slaughters a cow during celebrations of Eid al-Adha in Jakarta, Indonesia
Getty
Indonesian Muslims arrive for Eid al-Adha prayers at Sunda Kelapa Port in Jakarta
Getty
Children play with balloons after Eid al-Adha prayers at Sunda Kelapa Port in Jakarta, Indonesia
Getty
Indonesian girls arrive to attend a prayer session at Parangkusumo beach in Yogyakarta, Indonesia
Getty
Iraqi children pose as they as they celebrate the Muslim festival of Eid-al-Adha in Baghdad
Reuters
Egyptians take a ride at an amusement park during the Muslim holiday of Eid al-Adha in Cairo
AFP
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 City
Reuters
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 Jerusalem
AFP
Palestinian women from Gaza pray inside the Dome of the Rock in Jerusalem's Old City
Reuters
Two girls pose for a photo after Eid prayers at a mosque in Adjame, Abidjan, Ivory Coast
Reuters
Muslims offer Eid al-Adha prayers at the Jama Masjid (Grand Mosque) in the old quarters of Delhi
Reuters
A man attends prayers marking the Islamic festival of Eid al-Adha at an open field in Lagos, Nigeria
Reuters
A Palestinian boy stands among people performing their Eid al-Adha prayers in Gaza City
Reuters