Fatwa Banning Out of faith Marriage

So either 3 madhabs are wrong or one is… Right?
Which one of the 4 was revealed to the prophet?

Dar ul harb? So that is someone a Muslim caliphate is in a state of war with. Unsure who the khilafa is fighting these days.

But to be safe, One should not marry non Muslims but instead use the Mutah clause liberally.