Sustainable development in an Islamic economy is unattainable without the integration of ethics. To stay relevant, it is essential to broaden the interpretation of Shariah compliance beyond mere legal requirements, incorporating maqasid and qawaid to foster positive social and environmental outcomes. Islamic economics and finance are designed to benefit all humanity, not just Muslims, and achieving “Rahmatil alamin” (mercy to all) requires ethics to be deeply embedded in the economy. However, this can only be realized by transforming the mind-set of economic agents from “homo Islamic-legalus” to “homo Islamic-ethicus,” who prioritize ethical decision-making.