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.