[42] This verse alludes to the law known as "lex talionis" (law of retaliation/reciprocal justice) which states that justice should be carried out: ‘ayin tachat ‘ayin, “an eye for an eye”, as told in the Torah (Exodus 21: 24) but which was distorted from its proper, fully-known position. The Qur’an re-establishes this principle.
[43] Forgiveness is not only encouraged by Allah but is also rewarded for.