Matsya Purana — Cosmography of Śākadvīpa and Successive Dvīpas: Mountains
प्रजापतिमुपादाय प्रसन्नो विदधत्स्वयम् न तत्र मेघा वर्षन्ति शीतोष्णं च न तद्विधम् //
prajāpatimupādāya prasanno vidadhatsvayam na tatra meghā varṣanti śītoṣṇaṃ ca na tadvidham //
Taking Prajāpati (Prajāpati) into Himself, the Lord—well pleased—personally established the order of all things. In that realm the clouds do not rain, and there is neither cold nor heat of the ordinary kind.
It highlights a divinely regulated realm where ordinary meteorology (rain-bearing clouds) and seasonal extremes do not operate—implying a higher order of existence beyond the cyclical disturbances typical of the mortal world and its pralaya-prone conditions.
By contrasting divine order with worldly instability, it indirectly reinforces the Matsya Purāṇa ethic that rulers and householders should ‘establish order’ (vidadhat) in their sphere—through dharma, administration, and disciplined life—so society is not tossed about by excess and imbalance.
No direct Vāstu or ritual rule is stated, but the idea of a harmonized realm without extremes aligns with the Vāstu ideal of balanced space—designing settlements/temples to minimize harsh exposure and cultivate equilibrium (sāmya) and auspiciousness.