Mahabharata 3.108.14

एतच्छ्रुत्वा वचो राजा प्रातिष्ठत भगीरथःयत्र तानि शरीराणि सागराणां महात्मनाम्पावनार्थं नरश्रेष्ठ पुण्येन सलिलेन ह

etacchrutvā vaco rājā prātiṣṭhata bhagīrathaḥyatra tāni śarīrāṇi sāgarāṇāṃ mahātmanāmpāvanārthaṃ naraśreṣṭha puṇyena salilena ha

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