法苑珠林 70.72

70.72

漢綏和二年。定襄有牝馬。生駒三足。隨群飲食。五行志曰。以為馬國之武用象也。

In the second year of the Suihe era of the Han dynasty, in Dingxiang, a mare gave birth to a three-legged foal, which grazed and drank along with the herd. The Treatise on the Five Elements states that horses are symbols of the martial utility of the state.