Matsya Purana — The Strategy to Defeat Tāraka: Pārvatī’s Birth
प्रतीक्षमाणस्तज्जन्म कंचित्कालं निवत्स्यति तयोः सुतप्ततपसोर् भविता यो महाबलः //
pratīkṣamāṇastajjanma kaṃcitkālaṃ nivatsyati tayoḥ sutaptatapasor bhavitā yo mahābalaḥ //
Waiting for that birth, he will dwell there for some time; and to those two, whose austerities are intensely performed, there will be born a son of great strength.
This verse does not address Pralaya directly; it focuses on a prophetic birth resulting from intense tapas, a common Purāṇic motif within genealogical and manvantara narratives.
It underscores the Purāṇic ideal that legitimate succession and social stability are supported by dharmic conduct and disciplined austerity—suggesting that rulers and householders should uphold self-restraint and merit-based lineage through righteous living.
No Vāstu or temple-building rule is stated here; the ritual emphasis is on tapas (austerity) as a spiritual discipline believed to generate extraordinary outcomes such as the birth of a powerful heir.