Matsya Purana — Dhruva as Cosmic Pivot: Motions of Sun–Moon–Planets
युगाक्षकोटी ते तस्य वातोर्मी स्यन्दनस्य तु संक्रमेते ध्रुवमहो मण्डले सर्वतोदिशम् //
yugākṣakoṭī te tasya vātormī syandanasya tu saṃkramete dhruvamaho maṇḍale sarvatodiśam //
At the rim of that cosmic axle of the yugas, the wind-waves that drive the celestial chariot course onward; and indeed, around the fixed Pole, Dhruva, they move through the great circle in every direction.
Rather than describing Pralaya directly, the verse outlines the stable cosmic order—motion around Dhruva and the yuga-axis—implying a regulated universe that later texts contrast with dissolution when such order withdraws.
By presenting Dhruva as the ‘fixed’ center and the world’s movements as orderly, it supports the ethical ideal that kings and householders should maintain steadiness (dhruvatā) and uphold dharma so society ‘moves’ without chaos.
The explicit Vāstu rule is not stated, but Dhruva and the ‘maṇḍala’ imagery aligns with ritual/architectural mandala thinking—orientation to a fixed north/polar reference and designing sacred space as a regulated circle around a stable center.