Matsya Purana — Maya’s Nectar-Reservoir in Tripura and the Revival of the Slain in the Tripur...
रथचरणकरो ऽथ महामृधे वृषभवपुर्वृषभेन्द्रपूजितः दितितनयबलं विमर्द्य सर्वं त्रिपुरपुरं प्रविवेश केशवः //
rathacaraṇakaro 'tha mahāmṛdhe vṛṣabhavapurvṛṣabhendrapūjitaḥ dititanayabalaṃ vimardya sarvaṃ tripurapuraṃ praviveśa keśavaḥ //
Then, in that great battle, Keśava—whose limbs in action were like a chariot in motion, and who was honored by the bull-like lord (Śiva)—crushed the entire host of Diti’s sons and entered the city of Tripura.
This verse is not about Pralaya; it highlights divine intervention in a cosmic battle—Keśava crushing the Daityas and entering Tripura—showing how dharma is restored through avatāric power rather than through flood or dissolution imagery.
By portraying Keśava’s decisive destruction of oppressive forces, the verse supports the Rajadharma ideal: a ruler must protect society by restraining destructive powers and re-establishing order, acting firmly when adharma becomes militarized.
The key term is “Tripurapura” (the city of Tripura), evoking the Purāṇic motif of fortified demon-cities; while no direct Vāstu rule is stated, the verse is useful for contextual SEO around “Puranic city/fortress imagery” rather than technical temple-building prescriptions.