Part of the vine-scroll relief. Amidst a grapevine a hare is feeding on a bunch of grapes. The left hand of a male figure in peasant clothing is grasping at its tail. He has an annoyed expression on his face. He holds a stick with his right hand, raised above his shoulder, presumably to hit the hare with.
Davis (contrary to the actual visual evidence) suggests that the stick is not being brandished in an aggressive manner, but is being used as part of a "peaceful admonishment warning the hare not to return to its old ways". This is part of Davis's theory that the reliefs on the east facade "speak of peace which has been bought about through the redemptive work of the Second Adam. ...A renewed Garden of Eden".