《三国志·魏书·董二袁刘传》
将军您如果想要成就一番作为，可以乘着现在二人相争的机会寻找建功立业的时机；如果不行动，也应该在二人中选一人依附。
将军若欲有为，起乘其弊可也；若不然，固将择所从。
If you, General, wish to achieve great things, you can take advantage of this opportunity while the two are fighting and seize the moment to establish yourself; if you do not act, you should also choose one of the two to align yourself with.