Matsya Purana — Navagraha Sacrifice for Planetary Pacification and Prosperity
गङ्गाद्याः सरितः सर्वाः समुद्रांश्च सरांसि च गजाश्वरथ्यावल्मीकसंगमाद्ध्रदगोकुलात् //
gaṅgādyāḥ saritaḥ sarvāḥ samudrāṃśca sarāṃsi ca gajāśvarathyāvalmīkasaṃgamāddhradagokulāt //
All rivers beginning with the Gaṅgā, the oceans, and the lakes as well—these sacred waters—from confluences near elephant-grounds, horse-tracks, chariot-roads, and anthills, and from pools and cow-settlements, are to be regarded as holy for purificatory bathing and rites.
This verse is not about Pralaya; it belongs to a sacred-geography (tīrtha) and purification context, listing rivers, oceans, lakes, and confluences as sanctifying locations for rites.
It supports daily and occasional dharma: householders (and kings as exemplars) are encouraged to seek purification through snāna and related rites at recognized sacred waters—rivers, lakes, oceans, and especially confluences—before major rituals, vows, or gifts.
Ritually, it emphasizes tīrtha-snānā: waters at saṅgamas (confluences), hradas (tanks/pools), and other water bodies are treated as purifying. Architecturally, it indirectly supports the importance of maintaining tanks (hrada/saraḥ) near settlements (like gokula) for ritual cleanliness and religious observance.