Caitanya-caritāmṛta 5.151
niṣedha karite nāre, yāte choṭa bhāi mauna dhari’ rahe lakṣmaṇa mane duḥkha pāi’
[nishedha karite naare, yaate chota bhaai mauna dhari’ rahe lakshmana mane duhkha paai’]
Blended reading (Sanskrit + English inline)
niṣedha karite nāre, yāte choṭa bhāi mauna dhari’ rahe lakṣmaṇa mane duḥkha pāi’
As a younger brother He could not stop Lord Rāma from His resolution, and so He remained silent, although unhappy in His mind.
My note
Source: vedabase.io