Sundarakānda - Canto 39

Sītā asks Hanumān, when the latter is about to depart with the jewel for her head, to apprise Śrī Rāma and Laksmana of her own welfare and urge them to rescue her. When Sītā expresses her misgivings about the capacity of the heroes on Śrī Rāma’s side to cross the sea, Hanumān expatiates on the might of the monkey heroes and assures her of their ability to cross it, and in the end consoles her by promising to bring Śrī Rāma and Laksmana on his back across the sea in any case.