Khums

In Islam, khums (Arabic: خُمْس‎ Arabic pronunciation: [xums], literally 'one fifth') refers to the required religious obligation of any Muslims to pay one-fifth of their acquired wealth from certain sources toward specified causes. It is treated differently in Shia and Sunni Islam. This tax is paid to the imam, caliph or sultan, representing the state of Islam, for distribution between the orphans, the needy, and the [stranded] traveler.In Sunni Islam tradition, the scope of khums tax has been ghanim, which is defined as the spoils of war.