Matsya Purana — Cosmic Architecture of Sun–Moon and the ‘Houses of the Gods’
स संभृत्य प्रकाशार्थं त्रिधा तुल्यो ऽभवत्पुनः पाचको यस्तु लोके ऽस्मिन् पार्थिवः सो ऽग्निरुच्यते //
sa saṃbhṛtya prakāśārthaṃ tridhā tulyo 'bhavatpunaḥ pācako yastu loke 'smin pārthivaḥ so 'gnirucyate //
That fire, gathered and sustained for the sake of illumination, again became threefold, equal in essence. The one that ‘cooks’ in this world—being terrestrial—is called Agni, the earthly fire.
It frames Agni as a cosmic principle that manifests in a threefold form, implying orderly re-manifestation of elemental functions after dissolution, rather than describing a flood or Pralaya event directly.
By defining ‘pācaka’ (cooking/digestive fire) and earthly Agni, it supports the householder’s ritual and domestic order—maintaining fire for light, cooking, and regulated living—an ethic that also underlies a king’s duty to uphold social stability.
Ritually, it emphasizes sustaining fire for illumination and function, aligning with agni-centered rites (homa and household fire). Architecturally, it indirectly supports Vastu concerns about fire’s proper placement and use as a regulated terrestrial force.