《三国志·魏书·程郭董刘蒋刘传》
众位将领想要乘胜进行最后的攻击，郭嘉说： 袁绍宠爱这两个儿子，没有确立继承人。
诸将欲乘胜遂攻之，嘉曰： 袁绍爱此二子，莫適立也。
The generals wished to pursue the victory to stage the final attack, Guo Jia said: Yuan Shao favoured these two sons, he did not appoint an heir.