Matsya Purana — Vishnu’s Battle with Mathana
ततः क्षीणायुधप्राणा दानवा भ्रान्तचेतसः अस्त्राण्यादातुमभवन्न् असमर्था यदा रणे //
tataḥ kṣīṇāyudhaprāṇā dānavā bhrāntacetasaḥ astrāṇyādātumabhavann asamarthā yadā raṇe //
Then the Dānavas—spent of their weapons and strength, and bewildered in mind—became unable, in the midst of battle, to take up their missiles, being powerless on the battlefield.
This verse does not describe Pralaya; it depicts a battlefield turning-point where the Dānavas become exhausted and mentally confused, unable to wield their astras.
Indirectly, it highlights a dharmic lesson valued in the Matsya Purana’s ethical frame: victory depends on steadiness of mind and maintained strength; confusion and depletion render even armed forces ineffective—an admonition relevant to royal leadership and disciplined conduct.
No Vāstu, temple-building, or ritual procedure is stated here; the verse is purely martial, focusing on exhaustion, loss of capability, and the failure to take up weapons in battle.