Al Rajhi is considered by many to be one of the founding fathers of the Saudi banking industry. Al Rajhi announced that he would be giving the majority of his fortune away to charity — making him not only one of the Arab world’s wealthiest businessmen, but one of its most generous as well. The bank in which he holds the biggest individual stake — Al Rajhi Bank — is one of the stalwarts of the Saudi stock index, and the largest Islamic bank in the world.