Use that spell on that hole in the door
You use the SPELL OF HARD PUNCH on the HOLE IN THE CELL DOOR. This depletes your MANA by 4 (FOUR) MANA POINTS! You now have 2 (TWO) out of 10 (TEN) MANA POINTS remaining!

It was very effective!
You have successfully broken the bars on the hole in the door!

This hole is large enough for you to fit through although the sharp metal bars might cut you on your way through.

Go through the opening in the bars