When the search party heading south reached the seashore, the question arose of who could cross an ocean a hundred yojanas wide. Then the aged Jambavan reminded Hanuman of his forgotten power: "You are the son of the wind; nothing is impossible for you!" The curse was lifted and Hanuman took on a gigantic form.
With the cry of "Jai Shri Ram", he leapt. On the way he passed Surasa's test with his wisdom and put an end to the demoness Simhika. In Lanka he took a tiny form and searched until he found the grieving Sita in the Ashoka grove. He gave her Shri Rama's ring and reassured the Mother.
Then he laid waste to the Ashoka grove and defeated many demons. Meghnad bound him with the Brahmastra; out of respect for Brahma, Hanuman let himself be bound and was brought to Ravana's court. There he advised Ravana to return Sita.
Furious, Ravana had his tail set on fire. With that same burning tail, Hanuman set the golden city of Lanka ablaze. Then he took Sita's hair jewel, the chudamani, returned and gave Shri Rama the news: "Mother Sita is safe."