Matsya Purana — Cosmography of Jambūdvīpa: Varṣas
उदगायतो महाशैलो माल्यवान्नाम पर्वतः द्वात्रिंशता सहस्रेण प्रतीच्यां सागरानुगः //
udagāyato mahāśailo mālyavānnāma parvataḥ dvātriṃśatā sahasreṇa pratīcyāṃ sāgarānugaḥ //
To the north rises the great mountain named Mālyavān; it extends for thirty-two thousand (yojanas) and, in the western direction, runs on until it meets the ocean.
This verse is not about Pralaya; it belongs to the Matsya Purana’s cosmographic mapping, describing a named mountain (Mālyavān) and its extent up to the ocean.
Indirectly, such geographic catalogues support dharmic governance and pilgrimage culture: a king is expected to know the realm’s sacred geography and protect routes, tīrthas, and boundaries referenced in Purāṇic descriptions.
No direct Vāstu or ritual rule appears here; the practical takeaway is orientation (north/west) and spatial measure (32,000), which Purāṇas often use as a cosmological framework within which tīrthas and sacred sites are situated.