《魏书·列传·卷七》
元英因皇帝亲自出动，势力侧重在东南，汉中有可以利用的机会，上奏请求进军讨伐，高祖准许了他的意见。
英以大驾亲动，势倾东南，汉中有可乘之会，表求进讨。高祖许之。
Because the emperor had acted personally, Yuanying's forces concentrated on the southeast, but there was a valuable opportunity to use in Hanzhong. He petitioned to lead an attack on it, and Gaozu approved his plan.