Matsya Purana — Solar–Lunar Motions
अहस्तु चरते नाभेः सूर्यो वै मण्डलं क्रमात् कुलालचक्रपर्यन्तो यथा चन्द्रो रविस्तथा //
ahastu carate nābheḥ sūryo vai maṇḍalaṃ kramāt kulālacakraparyanto yathā candro ravistathā //
Without any “hand” to drive it, the Sun steadily moves, in due sequence, along its circular course around the nābhi (the cosmic hub), like the rim of a potter’s wheel; and in the same manner the Moon also moves, just as does the Sun.
It does not describe Pralaya directly; it emphasizes an ordered cosmic mechanism in which the Sun and Moon move regularly without a visible external ‘driver,’ implying a sustained cosmic order rather than dissolution.
By highlighting steady, law-like order in the cosmos, the verse indirectly supports the Purāṇic ethic that rulers and householders should uphold regularity and discipline (niyama) in governance, ritual timing, and daily duties aligned with solar–lunar cycles.
Ritually, it supports correct calendrical practice—tithis, months, and auspicious timings depend on Sun–Moon motion; this is often foundational for temple rites, consecrations, and Vastu-aligned muhūrta selection, though no specific building rule is stated in this verse.