Matsya Purana — War of Devas and Asuras; Birth of Aurva Fire; Countering Tamasī Māyā through ...
तत्सुरासुरसंयुक्तं युद्धमत्यद्भुतं बभौ धर्माधर्मसमायुक्तं दर्पेण विनयेन च //
tatsurāsurasaṃyuktaṃ yuddhamatyadbhutaṃ babhau dharmādharmasamāyuktaṃ darpeṇa vinayena ca //
That battle, joined between the Devas and the Asuras, appeared utterly wondrous—charged with both dharma and adharma, and driven alike by pride and by disciplined restraint.
This verse is not directly about pralaya; it frames cosmic history through moral polarity—dharma and adharma—showing that even grand events like divine wars are interpreted through ethical forces rather than only physical destruction.
It implies that conflict (political or personal) often contains mixed motives; a king or householder should act from vinaya (disciplined restraint) aligned with dharma, avoiding darpa (ego-driven pride) that leads toward adharma.
No direct Vāstu or ritual procedure is stated; the takeaway is conceptual—ritual and sacred order aim to strengthen dharma and restraint, the very qualities contrasted here against pride and adharma.