(17) Seth challenges Horus to a trial of strength. They are each turned into hippos and have to try and stay under water for three months. Isis was so afraid that her son would lose that she made a copper harpoon to help get rid of the competition. She hit Horus and then Seth whom she felt sorry for and set free. Horus cut off her head and was punished for it. He was healed by Hathor with gazelle's milk.