Matsya Purana — Dhruva as Cosmic Pivot: Motions of Sun–Moon–Planets
पुष्करा नाम ते पक्षा बृहन्तस्तोयधारिणः पुष्करावर्तका नाम कारणेनेह शब्दिताः //
puṣkarā nāma te pakṣā bṛhantastoyadhāriṇaḥ puṣkarāvartakā nāma kāraṇeneha śabditāḥ //
Those wings are called Puṣkara—vast, water-bearing masses; and for this very reason they are also spoken of here as Puṣkarāvartakas.
It does not describe Pralaya directly; it focuses on naming and characterizing great rain-bearing formations (often interpreted as clouds) connected with Puṣkara.
Indirectly, it supports the Purāṇic emphasis on sustaining life through water: understanding rain and water-sources underlies righteous governance (irrigation, reservoirs) and household rites dependent on pure water.
The verse foregrounds water-bearing forces associated with Puṣkara—useful for Vāstu and tirtha practice where site-selection and ritual purity prioritize dependable water presence (lakes, wells, rain patterns).