People try to tie down a bull ahead of sacrificing it during Eid-al-Adha celebrations in Istanbul, Turkey on August 21, 2018. Muslims across the world are celebrating the annual festival of Eid al-Adha or the festival of sacrifice which marks the end of the Hajj pilgrimage to Mecca and commemorates prophet Abraham's readiness to sacrifice his son to show obedience to God. Photo by Depo Photos/ABACAPRESS.COM