《资治通鉴·魏纪·魏纪十》
《春秋》之义说： 大夫出国在外，如果有可以安社稷、利国家之事，自行决断是可以的。 
《春秋》之义， 大夫出疆，有可以安社稷、利国家，专之可也。 
The Spring and Autumn Annals says, “When a Great Officer is out of the country if there is something that can benefit the state, he may act on his own authority.”