Matsya Purana — Description of Gomedaka and Puṣkara Dvīpas; the Lokāloka Boundary; Ocean Tide...
भूतादितो दशगुणं महद्भूतान्यधारयत् महत्तत्त्वं ह्यनन्तेन अव्यक्तेन तु धार्यते //
bhūtādito daśaguṇaṃ mahadbhūtānyadhārayat mahattattvaṃ hyanantena avyaktena tu dhāryate //
Tenfold beyond the bhūtādi, the Great Principle (mahat) sustained the gross elements; and that Mahat-tattva, in turn, is upheld by the Infinite—namely, the Unmanifest (avyakta).
It outlines a support-chain of reality: gross elements depend on Mahat, and Mahat depends on the Unmanifest (Avyakta/Infinite), implying that at Pralaya the manifest resolves back toward subtler principles.
Indirectly, it teaches hierarchy and dependence: just as the cosmos rests on higher principles, a ruler or householder should ground action in steadiness, restraint, and alignment with dharma rather than merely material outcomes.
No direct Vāstu or ritual rule is stated; however, the verse’s cosmological hierarchy is often used as a conceptual basis for temple symbolism—moving from gross forms to subtler principles represented in sanctum-centered design.