《黄帝内经·灵枢·终始》
已经吃饱饭的，不可以针刺；而已经针刺完的，亦不可以吃得过饱。
太阳之脉，其终也。
For someone who has eaten a full meal, acupuncture is not allowed; and for someone who has just received acupuncture, he/she should not eat too full.