《礼记·祭统》
综观饺的全过程，是每变一次而俊的人数也就随之增多，这是要区别人有贵贱之分，而施惠的对象却越来越多。
凡馂之道，每变以众，所以别贵贱之等，而兴施惠之象也。
Looking at the entire process of shaking the tray, every time there is a change, the number of people who shake the tray increases, thus distinguishing between the noble and the humble, but the number of objects of the bestowal of favor becomes increasingly more. 