तथा षोडशहस्तः स्यान् मण्डपश्च चतुर्मुखः वेद्याश्च परितो गर्ता रत्निमात्रास्त्रिमेखलाः //
tathā ṣoḍaśahastaḥ syān maṇḍapaśca caturmukhaḥ vedyāśca parito gartā ratnimātrāstrimekhalāḥ //
Demikian juga, maṇḍapa hendaklah berukuran enam belas hasta (hasta, cubit) dan berkepala empat (empat pintu masuk). Di sekeliling pelantar altar (vedī) hendaklah ada parit (garta) serta tiga jalur ikatan keliling (tri-mekhalā), setiap satu bersaiz satu ratni (ratni, jengkal).
This verse does not discuss Pralaya; it belongs to the Matsya Purana’s Vastuvidya material, prescribing precise architectural/ritual measurements for a mandapa and vedī layout.
It supports the dharmic duty of patrons (kings/householders) to build and sponsor correctly proportioned ritual and temple structures; accurate measurements are treated as essential for auspiciousness and proper worship.
It specifies a standard mandapa size (16 hastas), a four-entranced plan (caturmukha), and a vedi arrangement with an encircling trench and three concentric bands/steps, each one ratni in measure—key Matsya Purana temple and ritual-platform design rules.