出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第171页（198字）
比喻借别人的力量来消灭对方，例他挑拨你们双方相斗，不过想借刀杀人，你们千万不可上当。
Do not be taken in by him．He instigated the fight between you two because he wanted to get at one of you!