Matsya Purana — Dhruva as Cosmic Pivot: Motions of Sun–Moon–Planets
युगाक्षकोटीसम्बद्धौ द्वौ रश्मी स्यन्दनस्य तु ध्रुवेण प्रगृहीतौ तौ रथौ यौ वनतो रविम् //
yugākṣakoṭīsambaddhau dvau raśmī syandanasya tu dhruveṇa pragṛhītau tau rathau yau vanato ravim //
Two reins of the Sun’s chariot, fastened at the ends of the yoke and the yuga-axle, are held by Dhruva; by these the chariot is guided, directing the Sun along his course.
Indirectly, it emphasizes cosmic order: even celestial motion is regulated through Dhruva as a fixed pivot, a theme that contrasts with Pralaya where such ordered movements are withdrawn or obscured.
It functions as a political-ethical metaphor used across Purāṇic literature: just as Dhruva ‘holds the reins’ of the Sun’s course, a king (or disciplined householder) must firmly hold the ‘reins’ of conduct and governance to keep life aligned with dharma.
No direct Vāstu rule is stated, but Dhruva as the fixed ‘axis’ supports ritual orientation: many rites and temple alignments prioritize cardinal directions and the stable northern axis, echoing the idea of a cosmic pivot guiding order.