(5:45) And therein We had ordained for them: ‘A life for a life, and an eye for an eye, and a nose for a nose, and an ear for an ear, and a tooth for a tooth, and for all wounds, like for like.
74 But whosoever forgoes it by way of charity, it will be for him an expiation.75 Those who do not judge by what Allah has revealed are indeed the wrong-doers.74. Cf. Exodus 21: 23-5.75.
Whoever forgoes his right of retaliation does a good deed which will atone for many of his sins. The same is confirmed by a tradition of the Prophet (peace be on him) in which he said: ‘Whoever receives an injury on his body, then pardons (the inflictor of the injury), his sins are atoned for to the measure of his pardoning.’ (Ahmad b. Hanbal, Musnad, vol. 5, pp. 316, 329 – Ed.) My beloved brother as you can see that Allah azza wa jall has made this pratice permissible, however,know that it is best not to retaliate, for to do so expiates many of ones sins