The gods lured Fenrir to the island of Lyngvi. They challenged him to be bound by Gleipnir. To show Fenrir it was no trick, Týr put his hand in Fenrir's mouth. When he could not break Gleipnir's grip on him and they refused to let him out, Fenrir naturally bit off Týr's hand. Fenrir was to remain bound by Gleipnir until Ragnarök (the final great battle of the gods).