Matsya Purana — Tārakāsura’s Austerity and Boon; Mobilization for War; Bṛhaspati’s Fourfold P...
तस्माज्जयायामरपुंगवानां त्रैलोक्यलक्ष्मीहरणाय शीघ्रम् संयोज्यतां मे रथमष्टचक्रं बलं च मे दुर्जयदैत्यचक्रम् ध्वजं च मे काञ्चनपट्टनद्धं छत्त्रं च मे मौक्तिकजालबद्धम् //
tasmājjayāyāmarapuṃgavānāṃ trailokyalakṣmīharaṇāya śīghram saṃyojyatāṃ me rathamaṣṭacakraṃ balaṃ ca me durjayadaityacakram dhvajaṃ ca me kāñcanapaṭṭanaddhaṃ chattraṃ ca me mauktikajālabaddham //
Therefore, for the victory of the foremost among the immortals—and swiftly, for the seizure of the fortune of the three worlds—let my eight-wheeled chariot be yoked. Let my army too be assembled, an irresistible wheel against the Daityas. And let my standard be fastened with golden bands, and my royal parasol be bound with a net of pearls.
Nothing directly about Pralaya appears here; the verse is martial and political, focusing on mustering a chariot, army, and royal emblems to win sovereignty over the three worlds.
It reflects rajadharma in its martial aspect: decisive leadership, rapid mobilization, and the use of recognized symbols of authority (banner and parasol) to unify forces and assert legitimate sovereignty.
Not Vastu-architectural, but ritual-political symbolism is strong: the dhvaja (standard) and chatra (parasol) are consecrated royal insignia, marking divine/kingly authority and auspicious sovereignty.