I remember reading about this as a form of ancient torture, but I am unable to find evidence that is suggestive of that.
I did however find on this wikipedia page
uses a heavy chain to tie a cauldron to her stomach, then shoved rats under the rim of the pot. He put hot coals on the top, causing the rats to claw at Cara to try and get away from the rising temperature inside the pot
Is there any evidence that a rat will actually eat/burrow through flesh if it is placed on a person with hot coals surrounding an encapsulating "pot"?