Mahabharata 9.17.10

पुरोवातेन गङ्गेव क्षोभ्यमाना महानदीअक्षोभ्यत तदा राजन्पाण्डूनां ध्वजिनी पुनः

purovātena gaṅgeva kṣobhyamānā mahānadīakṣobhyata tadā rājanpāṇḍūnāṃ dhvajinī punaḥ

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