Canto 3 -
Araṇya-kāṇḍa
Chapter 46: Rāvaṇa Disguises Himself and Approaches Sītā
When Lakṣmaṇa departed to check on Rāma on the order of Sītā-devī, Rāvaṇa got his opportunity to approach Sītā. He assumed the form of a sannyāsī and went near her. He praised Sītā’s beauty and asked her why she came to the forest. She honored him by giving him water for washing his feet and other articles of worship.