《战国策·秦五·四国为一将以攻秦》
这时姚贾回答说： 我愿意替大王出使四个国家，必定能破坏掉他们的阴谋，使他们停止进兵。 
姚贾对曰： 贾愿出使四国，必绝其谋，而安其兵。 
At this moment, Yao Jia answered: I am willing to be an envoy for Your Majesty to visit four states. I can surely destroy their plot and make them stop advancing.