Matsya Purana — Tārakāsura’s Austerity and Boon; Mobilization for War; Bṛhaspati’s Fourfold P...
एतस्मिन्नन्तरे वायुर् देवदूतो ऽम्बरालये दृष्ट्वा स दानवबलं जगामेन्द्रस्य शंसितुम् //
etasminnantare vāyur devadūto 'mbarālaye dṛṣṭvā sa dānavabalaṃ jagāmendrasya śaṃsitum //
Meanwhile, Vāyu—the gods’ messenger—having seen the Daitya host in the celestial abode, went to inform Indra.
This verse does not address Pralaya; it depicts a wartime development where Vāyu scouts the Daitya forces and reports to Indra.
By analogy, it highlights a ruler’s need for timely intelligence and truthful reporting—core to rajadharma (statecraft), where accurate messengers enable proper protection and decision-making.
No Vāstu or ritual procedure is stated; the only setting is the 'celestial abode' (ambarālaya), used as a narrative location rather than an architectural prescription.