Wolf and heron

The wolf swallowed a piece of bone and was very uncomfortable. He ran around and went to the doctor. He met the heron and asked him to take out the bones. The heron put his head into the wolf's throat and pulled out the bones, so he set a good reward for the wolf. The wolf replied: "Hey, friend, can you take your head back from the wolf's mouth safely, is it not satisfied, how can you pay?"

This story shows that the reward for doing good to the bad guys is to understand the nature of the bad guys not to be creditworthy.