Matsya Purana — Solar–Lunar Motions
दिव्यस्य संनिवेशो वै साम्प्रतैरेव कृत्स्नशः शतार्धकोटिविस्तारा पृथिवी कृत्स्नशः स्मृता //
divyasya saṃniveśo vai sāmprataireva kṛtsnaśaḥ śatārdhakoṭivistārā pṛthivī kṛtsnaśaḥ smṛtā //
Indeed, the celestial arrangement is, even now, fully established by the people of the present age; and the entire Earth is traditionally remembered as having an expanse of one hundred and a half koṭis.
This verse is not describing Pralaya directly; it presents a traditional cosmographic claim about the established (ordered) structure of the world and the remembered numerical extent of the Earth.
By emphasizing a fixed, knowable cosmic order and measurable Earth, it supports the Purāṇic ideal that rulers and householders should align governance, settlement, and daily life with established standards (pramāṇa) and inherited tradition (smṛti).
The focus on saṃniveśa (ordered layout) and quantified extent echoes Vāstu thinking: correct planning depends on recognized measures and a coherent cosmic-geographic framework that guides proportional design.