Matsya Purana — Catalogue of the Eighteen Puranas
वाल्मीकिना तु यत्प्रोक्तं रामोपाख्यानमुत्तमम् ब्रह्मणाभिहितं यच्च शतकोटिप्रविस्तरम् //
vālmīkinā tu yatproktaṃ rāmopākhyānamuttamam brahmaṇābhihitaṃ yacca śatakoṭipravistaram //
But that supreme narrative of Rāma which was spoken by Vālmīki—and which was also declared by Brahmā—is said to extend in its full expanse to a hundred koṭis (a hundred crores) of verses.
This verse does not describe Pralaya directly; it emphasizes scriptural transmission and the immense scope of the Ramopākhyāna as a revered tradition rather than a cosmological event.
Indirectly, it elevates the Ramopākhyāna as an authoritative source of dharma: kings and householders are traditionally guided by Rāma’s ideal conduct (rājadharma and gṛhastha-dharma), even though this specific line focuses on the text’s provenance and magnitude.
No Vāstu, temple-building, or ritual procedure is mentioned in this verse; its significance is textual—affirming the sacred authority and extraordinary extent of the Rāma narrative.