Valmiki Ramayana 7.110.1

अध्यर्धयोजनं गत्वा नदीं पश्चान्मुखाश्रिताम् ।सरयूं पुण्यसलिलां ददर्श रघुनन्दनः॥

adhyardhayojanaṃ gatvā nadīṃ paścānmukhāśritām |sarayūṃ puṇyasalilāṃ dadarśa raghunandanaḥ ||

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