《魏书·列传·卷二十一》
不如先派使者晓谕他们，使百姓中不与猛雀同谋的人无罪，那么百姓必定欢喜而都投降啊。 
不如先遣使喻之，使民不与猛雀同谋者无坐，则民必喜而俱降矣。 
It would be better to send an emissary to inform them first, so that the people who do not conspire with Meng Que will be pardoned, and then the people will definitely be happy and surrender.