《资治通鉴·晋纪·晋纪二十二》
张说： 中原人爱自食其言。过去赵国石氏使臣的车辆刚刚返回，而进攻的骑兵已经到达，我不敢相信你们。 
瓘曰： 中州好食言，向者石氏使车适返，而戎骑已至，吾不敢信也。 
Zhang said: The people of the Central Plains love to go back on their word. In the past, the carriage of the envoy of the Shi family of Zhao had just returned, while the attacking cavalry had already arrived. I do not dare to trust you.