Matsya Purana — Solar–Lunar Motions
तारकासंनिवेशस्य दिवि यावत्तु मण्डलम् पर्याप्तसंनिवेशस्य भूमेस्तावत्तु मण्डलम् //
tārakāsaṃniveśasya divi yāvattu maṇḍalam paryāptasaṃniveśasya bhūmestāvattu maṇḍalam //
As far as the circular expanse of the star-arrangement extends in the sky, so far extends the circular expanse of the earth’s well-ordered arrangement.
It does not describe Pralaya directly; it presents a cosmographic correspondence—earth’s ordered disc is described as matching the extent of the starry mandala in the sky.
Indirectly, it supports the Purāṇic ideal of governance and household life rooted in cosmic order: proper planning, boundaries, and orientation should mirror a well-arranged universe.
The key idea is “maṇḍala” and “saṃniveśa” (ordered layout): in Vāstu and ritual mandalas, terrestrial planning is framed as an imitation of celestial order, guiding proportional layout and orientation.