Wow...a new German word to learn. Thank you.
Before he is executed, promise him that he will be returned to Mecca.
When this slime is executed, I’d much prefer that he’d be doused in a flammable acid (I’m not sure if such things exist), then, after a minute or so of excruciating pain, I’d have it lit aflame. Once he expires, take the corpse and air-drop it right into the Grand Mosque.
Preferably, tied to a B-61 gravity bomb.
Not sure, but I'll bet if you took some sulfuric acid, some dish detergent, and some ethanol/gasoline...