Why did Jacob not violate the prohibition of coveting when he purchased the birthright?

This source-based Torah study examines: Why did Jacob not violate the prohibition of coveting when he purchased the birthright? It follows the canonical Hebrew discussion through the parasha and classical Jewish sources. This localized discovery layer is a concise summary rather than a full translation of the article; practical, halakhic, medical, legal, historical, mystical or empirical claims remain source-framed and subject to the canonical review status.