whoever kills a believer deliberately the penalty for him is hell where he will remain forever. and god will be angry with him and will curse him and will prepare for him a terrible punishment.
ومن يقتل مؤمنا متعمدا فجزاؤه جهنم خالدا فيها وغضب الله عليه ولعنه وأعد له عذابا عظيما