Bind

You grasp the wrists of a willing or unconscious Huge or smaller creature with 0 hitpoints remaining and create a magical bind that holds their hands together, with similar bindings appearing around its ankles and mouth. While bound, the creature can't speak, its speed is reduced to 10 feet, it can't fly if it could, and it can't move more than 60 feet away from the caster unless the caster allows it. Additionally, it can't regain more than 1 hitpoint.

When you cast the spell, set a code word in your mind. When you speak it, regardless of where you are, the creature is released and the spell ends early.