 This is because without Zakat a tremendous hardship is placed on the poor which otherwise would not be there.Besides the fear of their prayers not getting heard, those who are able should be practicing this third pillar of Islam because the Quran states that this is what believers should do.Non-Muslims (able-bodied adult males of military age) living in an Islamic state are required to pay Jizya, this exempts them from military service and they do not pay Zakat.