Matsya Purana — Ila–Sudyumna Episode and the Expansion of the Ikṣvāku
तस्य पुत्रो दिलीपस् तु दिलीपात्तु भगीरथः येन भागीरथी गङ्गा तपः कृत्वावतारिता //
tasya putro dilīpas tu dilīpāttu bhagīrathaḥ yena bhāgīrathī gaṅgā tapaḥ kṛtvāvatāritā //
His son was Dilīpa; and from Dilīpa was born Bhagīratha—by whose austerities (tapas) the Gaṅgā, famed as Bhāgīrathī, was brought down to the earth.
This verse does not describe pralaya directly; it highlights sacred history and the cosmic sanctification of the earth through Gaṅgā’s descent, which in Purāṇic thought supports purification and renewal after periods of decline.
Bhagīratha exemplifies rājadharma: a king undertakes severe tapas not for private gain but for the welfare of the realm and ancestors, modeling self-discipline and public-spirited responsibility.
The verse points to ritual significance: Gaṅgā’s descent establishes her as a supreme purifier, grounding later practices such as tīrtha-snān (sacred bathing), ancestral rites, and consecratory ablutions where Gaṅgā-water is invoked.