Curse on Hanuman
Lord Hanuman had earned the reputation of being notorious during his childhood. During one such incident, an annoyed sage had hexed Hanuman. Due to the spell Hanuman was unable to remember the powers vested in him by the deities unless someone reminded him of it. When Sita was kidnapped by Ravana, Jambavantha had to remind Hanuman of his powers, so that he could pursue the search for Sita.