Matsya Purana — Vrata-Ṣaṣṭhī: The Sixty Sacred Vows
यः पठेच्छृणुयाद्वापि व्रतषष्टिम् अनुत्तमाम् मन्वन्तरशतं सो ऽपि गन्धर्वाधिपतिर्भवेत् //
yaḥ paṭhecchṛṇuyādvāpi vrataṣaṣṭim anuttamām manvantaraśataṃ so 'pi gandharvādhipatirbhavet //
Whoever recites—or even listens to—this unsurpassed set of sixty sacred observances (vratas), that person too becomes a lord among the Gandharvas for a hundred Manvantaras.
It does not describe Pralaya directly; it uses the cosmic time unit “Manvantara” to express an extraordinarily long-lasting reward for devotional recitation or listening.
It elevates śravaṇa (listening) and pāṭha (recitation) of dharma teachings as accessible duties for householders and rulers alike, promising spiritual merit even without complex ritual performance.
The focus is ritual-observance (vrata) and its phala (result), not Vāstu; the key takeaway is that engaging with the vrata-teachings through recitation/hearing itself is treated as a potent dharmic act.