The type of killing prescribed by law is a blow to the neck with a sword or similar, since this is the most amenable way to kill. Similarly, Allah prescribed that humans and animals made permissible to kill, be killed if possible in this manner. The Prophet (SAW) said: Indeed Allah has ordained for things to be done well, so whenever you kill, make it a good killing, and whenever you sacrifice, make it a good sacrifice; and let each of you sharpen his blades, to make it amenable for what is being sacrificed. (Related by Muslim). And He said: Indeed the people who kill most decently are those who believe [ahl al-iman].