《宋书·志·卷十七》
愚意以为出现食，太庙火灾，上天责罚的变异，才可以改祭祀日期。
愚谓日蚀庙火，天谴之变，乃可迁日。
In my opinion, only in the event of a solar eclipse, a fire in the ancestral temple, or an omen indicating divine punishment should the date of the sacrifices be changed.