Matsya Purana — The Slaying of Jambha and the Rise of Tāraka: Divine Battle Formations
शंभुं बिभेद दशनैर् नाभिदेशे गजासुरः दृष्ट्वा सक्तं तु रुद्राभ्यां नव रुद्रास्ततो ऽद्भुतम् //
śaṃbhuṃ bibheda daśanair nābhideśe gajāsuraḥ dṛṣṭvā saktaṃ tu rudrābhyāṃ nava rudrāstato 'dbhutam //
Gajāsura pierced Śambhu (Śiva), biting him with his tusks in the region of the navel. Seeing him thus engaged with the two Rudras, thereupon—marvellously—nine Rudras manifested.
This verse does not describe Pralaya; it highlights a theophany—multiple Rudra manifestations arising amid combat—showing divine multiplication of power rather than cosmic dissolution.
Indirectly, it reinforces a Purāṇic ethic: when confronted by disruptive forces (asura-like violence), dharmic order is protected through resolute action and divine support—an ideal mirrored in a king’s duty to protect subjects and restrain aggression.
No direct Vāstu rule is stated, but the mention of “Nava Rudras” is often ritually relevant for Rudra-oriented worship (Rudra-arcana) and can inform iconographic/temple program themes where multiple Rudra forms are installed or invoked.