Matsya Purana — Vishnu’s Battle with Mathana
तानस्त्रान्दानवैर्मुक्तांश् चित्रयोधी जनार्दनः एकैकं शतशश्चक्रे बाणैरग्निशिखोपमैः //
tānastrāndānavairmuktāṃś citrayodhī janārdanaḥ ekaikaṃ śataśaścakre bāṇairagniśikhopamaiḥ //
Those missiles released by the Dānavas, Janārdana—the wondrous master of battle—countered by turning each one into hundreds, striking them with arrows blazing like tongues of fire.
This verse does not address Pralaya; it highlights divine martial power—Janārdana neutralizing demonic missiles through fiery arrows and multiplicative counter-strikes.
Indirectly, it models kṣātra-dharma: protecting order by skill, courage, and proportional response to aggression—an idealized template for a ruler’s defense of society.
No Vāstu/temple-building or ritual procedure is mentioned; the technical focus is on astras (missiles) and bāṇas (arrows) within a battle description.