If a person granted property or rendered service for an illegal cause, he or she may not demand the return of benefits resulting therefrom; provided, this shall not be the case if such illegal cause exists only on the part of the person enriched.
Civil Act — Article 746 (Performance for illegal cause)
민법 제746조
For AI agents and developers — get this article as JSON, with the English and current Korean effective dates and an outdated-translation flag, from the korea-law API or as an MCP tool:
https://mcp.apify.com?tools=kr-data/korea-law