Valmiki Ramayana 1.31.6
मैथिलस्य नरश्रेष्ठ जनकस्य भविष्यति ।यज्नः परम धर्मिष्ठः तत्र यास्यामहे वयम्॥
maithilasya naraśreṣṭha janakasya bhaviṣyati |yajnaḥ parama dharmiṣṭhaḥ tatra yāsyāmahe vayam ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book