Valmiki Ramayana 2.8.17
सा त्वमभ्युदये प्राप्ते वर्तमाने च मन्थरे ।भविष्यति च क्ल्याणे किमर्थं परितप्यसे॥
sā tvamabhyudaye prāpte vartamāne ca manthare |bhaviṣyati ca klyāṇe kimarthaṃ paritapyase ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book