《搜神记·卷六》
臣民互相排斥善良，那反常现象与此相同。人或马、牛、羊、鸡、狗、猪等六畜的头和眼睛长在下面，这叫做没有上面，它预示政权将会变动。
若六畜，首目在下。 兹谓亡上，政将变更。
The people of the country reject each other's kindness, and the abnormal phenomenon is the same. If the heads and eyes of people or animals such as horses, cows, sheep, chickens, dogs, and pigs are on the bottom, it is called "having no top", which foreshadows a change of regime.