An Analysis of Supply Theory in Islamic Economics: Integrating Sharia Principles, Market Mechanisms, and Production Cost Efficiency

Abstract

Supply theory explains how producers adjust quantities offered for sale in response to prices, production costs, technology, and institutional conditions. Islamic economics accepts the analytical usefulness of these relationships while imposing ethical limits on the products supplied and the means by which supply is organized. This article analyzes supply theory through a qualitative literature-based conceptual approach, drawing on the Group 6 paper on Islamic supply theory, established microeconomic concepts, and relevant Islamic normative principles. The analysis examines the law of supply, movements and shifts of the supply curve, marginal cost, the competitive firm’s short-run supply decision, and ethical constraints relating to lawful production, truthful exchange, hoarding, and social welfare. The findings indicate that price and marginal cost remain valuable analytical tools, but a purely profit-maximizing account does not adequately describe the normative objectives of Islamic production. A proposed integrated framework distinguishes descriptive market mechanisms from Sharia compliance and distributive responsibilities. The paper contributes a structured conceptual synthesis rather than empirical evidence of the effects of Islamic business practices