Valmiki Ramayana Ayodhya Kanda Sarga 22 Shloka 13
Original Shlokaमयि चीराजिनधरे जटामण्डलधारिणि। गतेऽरण्यं च कैकेय्या भविष्यति मनस्सुखम्।।2.22.13।।
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मयि I, चीराजिनधरे wearing tattered clothes (bark) and antelope skin, जटामण्डलधारिणि wearing a crown of matted hair, अरण्यम् to the forest, गते when I leave, कैकेय्याः Kaikeyi, मनस्सुखम् peace of mind, भविष्यति will attain.
Kaikeyi will attain peace of mind only after my departure to the forest in tattered clothes, an antelope skin and a crown of matted locks.