《史记·三十世家·晋世家》
重耳说： 假使不得已，万一在平原、湖沼地带与您兵戎相遇，请为王退避三舍。 
重耳曰： 即不得已，与君王以兵车会平原广泽，请辟王三舍。 
Zhonger said: If it cannot be helped, and if we were to meet on the battlefield on a plain or in a swampy area, I would retreat three leagues for you.