Matsya Purana — Vishnu’s Battle with the Daityas: Astra-Combat
अस्त्रे प्रतिहते तस्मिन् विष्णुर्दानवसूदनः कालदण्डास्त्रमकरोत् सर्वलोकभयंकरम् //
astre pratihate tasmin viṣṇurdānavasūdanaḥ kāladaṇḍāstramakarot sarvalokabhayaṃkaram //
When that weapon had been countered, Viṣṇu—the slayer of the Dānavas—then deployed the Kāla-daṇḍa missile, terrifying to all the worlds.
It does not describe pralaya directly; it emphasizes cosmic protection—Viṣṇu escalates to a ‘Time/Death’ weapon when earlier force is neutralized, underscoring divine control over destructive power.
By analogy, it models rājadharma: when ordinary measures fail against threats, the protector must act decisively to restore order—yet with authority aligned to dharma, not personal rage.
No Vāstu or temple-ritual rule is stated here; the technical focus is astravidyā (weapon-lore) and the notion of Kāla (Time) as a sanctioned instrument of divine justice.