《北史·列传·卷三十六》
尔朱荣开始讨伐葛荣时，军队到达襄垣，便大举围猎。有两只兔子在马前面奔跑，他弯弓立誓说： 射中了就能捉住葛荣，射不中就抓不住。 
初，荣将讨葛荣，军次襄垣，遂大猎，有双兔起于马前，荣弯弓誓之曰： 中则禽葛荣，不中则否。 
When Erzhu Rong began his assault on Ge Rong, the army reached Xiangyuan and he started a large-scale hunting expedition. Two hares ran in front of his horse, and he drew his bow and made an oath, saying: If I hit them, I will be able to capture Ge Rong, if I miss, I will not be able to capture him.