Here's a lovely little video of some Muslim cleric sitting in front of his laptop instructing followers on the best way to behead people.
With a sword, slit, not sever, and definitely "enjoy yourself with it."
They have a good laugh about it.
He seems to be referencing Al-Qurtubi, an imam born in Cordoba when the Muslims were occupying Spain back in the 1200s.
I'm not sure where the video was taken.