即以其人之道，還治其人之身 (jí yǐ qí rén zhī dào,huán zhì qí rén zhī shēn)

1. 就拿這個人整治他人的方式,反過來整治這個人本身 do unto them as they do unto us;answer a fool according to his folly;deal with sb. as he deals with you;does sb. with his own physique;give sb. a dose of his own medicine;pay sb. back in his own coin;requite like for like;pay back in kind