Matsya Purana — The Burning of Tripura and Rudra’s Victory
ततस्तु शङ्खानकभेरिमर्दलाः ससिंहनादा दनुपुत्रभङ्गदाः कपर्दिसैन्ये प्रबभुः समन्ततो निपात्यमाना युधि वज्रसंनिभाः //
tatastu śaṅkhānakabherimardalāḥ sasiṃhanādā danuputrabhaṅgadāḥ kapardisainye prababhuḥ samantato nipātyamānā yudhi vajrasaṃnibhāḥ //
Then, on every side of Kapardi’s host, conches, kettle-drums, war-drums, and mṛdaṅgas resounded with lion-like roars, shattering the sons of Danu, while warriors were struck down in battle like thunderbolts of vajra.
This verse does not address pralaya; it depicts a war-scene where martial sounds and fierce assault rout the Danu-born demons.
Indirectly, it reflects the Kshatriya ethos found across the Purana: organized forces, morale-signaling instruments (conch and drums), and the decisive subduing of adharma-aligned foes (here, the Danavas).
No Vastu or temple rule is stated; the ritual note is martial—śaṅkha and drums function as auspicious battlefield signals and morale-raising proclamations of power.