Matsya Purana — The Advent of Narasiṃha and Hiraṇyakaśipu’s Weapon-Assault
स ह्यमर्षानिलोद्भूतो दैत्यानां सैन्यसागरः क्षणेन प्लावयामास मैनाकमिव सागरः //
sa hyamarṣānilodbhūto daityānāṃ sainyasāgaraḥ kṣaṇena plāvayāmāsa mainākamiva sāgaraḥ //
For the ocean-like army of the Daityas, risen as if from a wind of wrath, in a moment flooded everything—like the sea engulfing Mount Maināka.
It does not describe cosmic Pralaya directly; it borrows flood imagery (inundation by the sea) to portray how swiftly the Daitya army overwhelms opponents.
Indirectly, it warns that uncontrolled anger and massed force can rapidly destabilize order; a king’s dharma is to anticipate such surges (like a flood) and respond with discipline, strategy, and restraint rather than rage.
No explicit Vāstu or ritual rule is stated; the verse is primarily a poetic simile, using the sea and Mount Maināka to convey scale and sudden inundation.