ESODO 21:6

faccialo il suo signore comparire davanti a' giudici; poi faccialo appressare all'uscio, o allo stipite della porta, e forigli l'orecchio con una lesina; e servagli colui in perpetuo.

Then his master shall bring him unto the judges; he shall also bring him to the door, or unto the door post; and his master shall bore his ear through with an aul; and he shall serve him for ever.