This paper explores the systemic roots of debt and riba (interest) in conventional monetary systems and presents a morally grounded alternative based on the Tawhidi String Relations (TSR) framework. Within the prevailing fractional reserve system, money creation through debt issuance has led to financial instability, speculative cycles, and wealth concentration—dynamics that conflict with the foundational principles of Islamic economics, particularly the prohibition of riba and the imperative for distributive justice. In response, the paper proposes a 100% reserve requirement monetary system that aligns with TSR’s epistemology of unity (tawhid), emphasizing complementarity between ethics, economic institutions, and real sector activities. The study argues that under the TSR framework, money is not a neutral tool but a moral instrument tied to real value creation and governed by ethical purpose. Through the principles of circular causation and knowledge-ethics-action integration, the full reserve system facilitates participatory finance, eliminates the structural basis for riba, and enhances financial inclusion and macroeconomic stability. Banks are reconceptualized as ethical intermediaries operating through profit-and-loss sharing contracts, while investments are directed toward socially beneficial and risk-shared ventures. Supported by both theoretical rigor and empirical evidence, this paradigm offers a holistic, sustainable, and shari‘ah-compliant alternative to debt-based finance. Ultimately, the TSR-aligned full reserve model offers not only a monetary reform, but a civilizational shift toward a justice-oriented Islamic economic order.