Matsya Purana — The Greatness and Procedure of the Aṅgāra
ये च त्वां पूजयिष्यन्ति चतुर्थ्यां त्वद्दिने नराः रूपमारोग्यमैश्वर्यं तेष्वनन्तं भविष्यति //
ye ca tvāṃ pūjayiṣyanti caturthyāṃ tvaddine narāḥ rūpamārogyamaiśvaryaṃ teṣvanantaṃ bhaviṣyati //
And those men who will worship you on the fourth lunar day—your sacred day—will obtain beauty, health, and prosperity; for them, these blessings will be endless.
This verse does not describe Pralaya directly; it gives a phala-śruti (result statement) that worship on Caturthī yields enduring beauty, health, and prosperity.
It frames regular, calendar-based worship (tithi-vrata) as a dharmic practice for householders and rulers alike—supporting personal well-being and stable prosperity through disciplined devotion.
The ritual significance is tithi-specific pūjā: performing worship on Caturthī, identified as the deity’s special day, with the promised fruits of sustained auspiciousness.