From the epics · 2 tellings · North India, Pan-India
Hanuman's leap to Lanka and the ring for Sita
Hanuman leaps the ocean to Lanka, passing the mountain Mainaka, the serpent mother Surasa and the shadow-catcher Simhika, searches the city by night, finds Sita in the Ashoka grove and gives her Rama's ring, then lets himself be caught and burns Lanka with his own tail.
Hanuman presses Mount Mahendra with his feet and leaps; the hill sheds its trees. Mainaka rises from the sea and offers rest; he touches it and goes on. Surasa, mother of serpents, opens her mouth to swallow him; he grows, she grows, and then he shrinks to a thumb, goes in and out of her mouth and thanks her. Simhika seizes his shadow and he tears her from within. In Lanka at night he searches the palaces, sees a sleeping queen and thinks for a moment she is Sita, then is ashamed: Sita would not sleep in Ravana's house. In the Ashoka grove he hides in a shimshupa tree, sees Ravana give Sita two months, hears Trijata's dream, and softly recites Rama's story until Sita looks up. He gives the ring; she gives her chudamani and the story of the crow Rama once punished for her. He breaks the grove, kills Aksha, lets Indrajit bind him, speaks to Ravana, and with his burning tail sets the city on fire. Only then he fears for Sita, and finds her safe.
Tulsidas's Hanuman crosses the sea chanting Rama's name. In Lanka he is surprised to hear the name from a house: it is Vibhishana's, and Vibhishana tells him where Sita is. From the tree Hanuman drops Rama's ring into Sita's lap and she knows it. He asks leave to eat the fruit of the grove, uproots it, and when his tail is wrapped in cloth and oil it keeps growing until all the cloth in Lanka is gone. He burns every house but Vibhishana's. The Sundar Kand is read whole on Tuesdays and Saturdays and in trouble.
Sources: The Ramayan of Valmiki, tr. Ralph T. H. Griffith: Sundara Kanda and Yuddha Kanda 74 and 101; Sundara Kanda, Wikipedia; Ramcharitmanas, Wikipedia