《资治通鉴·晋纪·晋纪三十九》
只要派信使飞马去把孙畅征召来，再派抚军将军姚据守陕城，我再去潼关调遣指挥各支军队。如果孙畅接受诏书来京，我便派遣姚懿统领河东的现有部队去抵抗晋军；如果他不接受征召，便可以公布他的罪状，公开讨伐他。 
但驰使征畅，遣抚军将军赞据陕城，臣向潼关为诸军节度，若畅奉诏而至，臣当遣懿帅河东见兵共御晋师；若不受诏命，便当声其罪而讨之。 
As long as we send a messenger on a fast horse to summon Sun Chang and send General Yao Ju to guard Shancheng, I'll go to Tongguan to coordinate and command the troops. If Sun Chang accepts the edict to come to the capital, I will send Yao Yi to lead the current troops in Hedong to resist the Jin army. If he does not accept the summons, we can publish his crimes and openly denounce him.