《明史·列传·卷一百五十六》
如果都像宁武这个样子，我们的士兵还能剩几个呢？不如先回陕西休息，以后再来打吧。 
刻期将遁，而大同总兵姜瓖降表至，自成大喜。
If everything is like Ningwu, how many soldiers will we have left? Let's go back to Shaanxi and rest, and then come back to fight.