Matsya Purana — The Advent of Narasiṃha and Hiraṇyakaśipu’s Weapon-Assault
मुद्गरैर्भिन्दिपालैश्च शिलोलूखलपर्वतैः शतघ्नीभिश्च दीप्ताभिर् दण्डैरपि सुदारुणैः //
mudgarairbhindipālaiśca śilolūkhalaparvataiḥ śataghnībhiśca dīptābhir daṇḍairapi sudāruṇaiḥ //
With maces and bhindipāla-spears, with rocks, stone mortars, and mountain-like boulders; with blazing śataghnī weapons as well, and with exceedingly dreadful staves—(they fought/assailed).
This verse does not discuss pralaya; it is a martial catalogue describing the use of heavy weapons and destructive implements in battle.
In the Rajadharma frame, it reflects the Kshatriya sphere—kings and warriors maintaining order through sanctioned force; it implies preparedness, armament, and the realities of warfare that royal duty sometimes entails.
No direct Vastu or ritual procedure is stated; the verse is significant for historical-military vocabulary (e.g., śataghnī as a destructive weapon/engine) rather than temple architecture.