an eye for an eye, a tooth for a tooth
Compensation or retribution that is (or should be) of an equal amount or degree to the injury or offense that was originally dealt. The saying comes from various passages in the Bible, including in Exodus, Leviticus, and Deuteronomy. I cannot be placated by paltry excuses of reparation! An eye for an eye, a tooth for a tooth; this I demand from all who have wronged me.
an eye for an eye and a tooth for a tooth
used to refer to the belief that retaliation in kind is the appropriate way to deal with an offence or crime. This expression refers to the law of retribution as set out in the Old Testament (Exodus 21:24), known as lex talionis .