Repentance (tawbah) from murder
Question

                How does a murderer repent for his sin?
Praise be to Allah.A murderer has three rights on him. That of Allah, that of the murdered person, and 
those of his or her immediate kin. 
As for Allah's right it cannot be requited but with true repentance. 
The right of the immediate kin can be requited by the murderer by handing himself over 
to them in order that they either: a) turn him over to the authorities for execution; b) 
accept monetary compensation from him; or c) forgive him. 
The right of the person himself who was murdered cannot be compensated for in this 
world. Some scholars are of the opinion - and this seems to be the preferable opinion - 
that if the murderer is true in his repentance, Allah will clear him of his sin and 
compensate on his behalf by satisfying the person murdered on the Day of Judgment.