Mahabharata 12.274.16

गङ्गा च सरितां श्रेष्ठा सर्वतीर्थजलोद्भवापर्युपासत तं देवं रूपिणी कुरुनन्दन

gaṅgā ca saritāṃ śreṣṭhā sarvatīrthajalodbhavāparyupāsata taṃ devaṃ rūpiṇī kurunandana

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