《三国志·魏书·武帝纪》
九月，出兵渡过渭水，马超等人多次挑战，曹公并不应战；再三请求割地，并让自己的儿子做人质求和，曹公听从贾诩之计，假意先应下来。
九月，进军渡渭。超等数挑战，又不许；固请割地，求送任子，公用贾诩计，伪许之。
In September, troops were sent to cross the Weishui, and Ma Chao and others challenged many times, but Cao Gong did not respond; repeatedly requested to cede land and ask for peace by making his own son a hostage, Cao Gong took Jia Xu's plan and pretended to agree first.