Matsya Purana — The Slaying of Jambha and the Rise of Tāraka: Divine Battle Formations
आकाशे मुमुचुः सर्वे दानवानभिसंध्य ते अस्त्राणि व्यर्थतां जग्मुर् देवानां दानवान्प्रति //
ākāśe mumucuḥ sarve dānavānabhisaṃdhya te astrāṇi vyarthatāṃ jagmur devānāṃ dānavānprati //
Aiming at the Dānavas, they all discharged their missiles into the sky; yet those weapons, hurled by the Devas against the Dānavas, came to nothing and proved futile.
This verse does not discuss pralaya directly; it illustrates a cosmic battle motif where even divine weapons can become ineffective, implying that outcomes depend on higher destiny, boons, or divine ordinance rather than force alone.
Indirectly, it supports a key Purāṇic ethic for rulers: victory is not guaranteed by weapons alone; strategy, righteousness (dharma), and the legitimacy of one’s cause are decisive—warning kings against overreliance on mere force.
No Vāstu or ritual procedure is stated in this verse; its focus is on astras in warfare, not temple-building or consecration rites.