《礼记·祭统》
虽然是让人代替，但效果却和国君亲临没有什么不同，原因就在于国君深明祭祀之义。
虽使人也，君不失其义者，君明其义故也。
Despite the fact that he is sending someone else as a substitute, the outcome is no different from if he were to attend in person because the ruler has a deep understanding of the significance of the sacrificial rituals.