Matsya Purana — Genealogy and Classification of Sacred Fires
पर्जन्यः पवमानस्तु द्वितीयः सो ऽनुदृश्यते पावकोष्णः समूह्यस्तु वोत्तरे सो ऽग्निरुच्यते //
parjanyaḥ pavamānastu dvitīyaḥ so 'nudṛśyate pāvakoṣṇaḥ samūhyastu vottare so 'gnirucyate //
Parjanya—also called Pavamāna—is described as the second form. And in the subsequent account, the fire known as Pāvaka (also called Uṣṇa) is stated to be the collective or aggregated (samūhya) one.
It does not directly describe Pralaya; instead, it classifies cosmic/ritual powers—Parjanya/Pavamāna and Pāvaka (Agni as heat)—which are foundational forces that continue to function across cycles of creation and dissolution.
By naming and distinguishing sacred forces (rain-power and fire/heat), the verse supports correct ritual understanding for householders and rulers who sponsor yajñas—ensuring offerings, seasonal rites, and prosperity-invoking ceremonies are aligned with properly identified divine energies.
Ritually, it emphasizes precise identification of fire-forms (Agni as Pāvaka/Uṣṇa). In Vastu-informed practice, such classifications support correct orientation and handling of fire in rites (Agni-related functions) and the broader ritual ecology tied to rain (Parjanya).