Matsya Purana — Tārakāsura’s Austerity and Boon; Mobilization for War; Bṛhaspati’s Fourfold P...
तुरंगमातंगबलौघसंकुला सितातपत्रध्वजराजिशालिनी चमूश्च सा दुर्जयपत्त्रिसंतता विभाति नानायुधयोधदुस्तरा //
turaṃgamātaṃgabalaughasaṃkulā sitātapatradhvajarājiśālinī camūśca sā durjayapattrisaṃtatā vibhāti nānāyudhayodhadustarā //
That army—thronged with masses of cavalry and elephants, adorned with rows of white parasols and banners—shone forth as an invincible battle-formation, difficult to overcome, crowded with warriors bearing many kinds of weapons.
This verse is not about Pralaya; it is a martial description emphasizing royal power through a vast, well-marked army formation.
It reflects Rajadharma: a king is expected to maintain organized forces (cavalry, elephants, weapon-bearers) and visible standards (parasols, banners) to protect the realm and deter enemies.
No Vastu or temple-ritual rule is stated; the key significance is royal insignia (white parasols, banners) used ceremonially to signal sovereignty and order in public processions and war.