The Syrian Rebels are going to punish the Syrian Rebel who torn out the heart of the enemy and ate it

I wonder if there is a specific punishment for this action, perhaps a fine, but hopefully not a punishment as graphic. A reasonable punishment would be for the Syrian Rebels to toss a canister of Sarin gas into the Syrian Rebel's house I guess. They seem to have a lot of it lying around these days, and they do have good friends in Washington and London...very good friends indeed.