Mahabharata 13.27.50

स्वायंभुवं यथा स्थानं सर्वेषां श्रेष्ठमुच्यतेस्नातानां सरितां श्रेष्ठा गङ्गा तद्वदिहोच्यते

svāyaṃbhuvaṃ yathā sthānaṃ sarveṣāṃ śreṣṭhamucyatesnātānāṃ saritāṃ śreṣṭhā gaṅgā tadvadihocyate

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