Valmiki Ramayana 6.106.10

एवं परुषमुक्तस्तु हितबुद्धिरबुद्धिना ।अब्रवीद्रावणं सूतो हितं सानुनयं वचः॥

evaṃ paruṣamuktastu hitabuddhirabuddhinā |abravīdrāvaṇaṃ sūto hitaṃ sānunayaṃ vacaḥ ||

Our plain-language meaning of this verse is waiting for scholar review.