Canto 3 -
Araṇya-kāṇḍa
Chapter 47: Rāvaṇa Reveals his Identity to Sītā
Fearful that Rāvaṇa in the guise of a sannyāsī might curse her, Sītā-devī described about herself and the reason for her having come to the forest. She then asked him about himself. Now that Rāvaṇa had gotten this opportunity, he revealed his identity to Sītā, glorified himself and requested her to become his wife. Sītā-devī spoke about the transcendental qualities of Lord Rāma and informed Rāvaṇa that she desired no one other than her husband. She then described the enormous disparity between Lord Rāma and Rāvaṇa, and censured him in many ways.