法苑珠林 31.57

31.57

漢景帝三年。邯鄲有犬與家豕交。時趙王遂與六國共反。外結匃奴以為援。五行志。以為趙王昏亂豕類。外交之異。匃奴犬豕之類也。

In the third year of Emperor Jing of the Han dynasty, in Handan, a dog copulated with a domestic pig. At that time, King Sui of Zhao revolted in alliance with the six states, forging external ties with the Xiongnu to serve as his support. The 'Treatise on the Five Elements' considered the King of Zhao muddled and confused, belonging to the category of swine, and this anomalous external union [showed] that the Xiongnu belonged to the category of dogs and swine.