Matsya Purana — Ritual Bathing
एतानि पुण्यनामानि स्नानकाले प्रकीर्तयेत् भवेत्संनिहिता तत्र गङ्गा त्रिपथगामिनी //
etāni puṇyanāmāni snānakāle prakīrtayet bhavetsaṃnihitā tatra gaṅgā tripathagāminī //
At the time of bathing, one should recite these holy names; then the Gaṅgā—she who flows along the three paths—becomes present there.
It does not discuss pralaya directly; it teaches a ritual principle that sacred recitation can invoke a tirtha’s divine presence—here, Gaṅgā—at one’s bathing place.
It supports nitya-śauca (daily purification): a householder (and a king as an exemplar) should perform bathing with remembrance/recitation of sacred names, integrating inner devotion with outer cleanliness.
Ritually, it prescribes nāma-kīrtana at snāna as a means of sanctifying the act and the location, effectively making the bathing spot equivalent in merit to Gaṅgā’s presence.