In a well-known tale, a man finds three ryō and brings the money to its owner. The owner refuses it. Money that he has lost, he says, is no longer his. Neither man will keep it. The magistrate Ōoka Echizen adds one ryō of his own and gives each man two. Each of the three loses one ryō.
The tale is called sanpō ichiryō zon, three sides each lose one ryō. It is one of the Ōoka sabaki, the judgments of Ōoka, and it is almost entirely invented.