《后汉书·列传·蔡邕列传下》
按《礼》，妻妾生子，斋戒，不入侧室之门，没有废掉祭祀的规定。
粲乎煌煌，莫非华荣。
According to the "Book of Rites", if a wife or concubine gives birth to a child, she will fast, and not enter the door of the side chamber, but there is no rule that sacrifices should be abolished.