Amatul Rahmân Omer:
And do not kill anyone, the sanctity of which Allâh has upheld (and has forbidden you to slay) except for a just cause. And We have given, of course, to the heir of the person who is killed unjustly the right (to demand retribution or to forgive). But let him not exceed the (prescribed) limits in killing (the murderer) because he is indeed helped (and protected by law).
