Matsya Purana — Navagraha Sacrifice for Planetary Pacification and Prosperity
विष्कम्भार्धोच्छ्रितं प्रोक्तं स्थण्डिलं विश्वकर्मणा संस्थापनाय देवानां वप्रत्रयसमावृतम् //
viṣkambhārdhocchritaṃ proktaṃ sthaṇḍilaṃ viśvakarmaṇā saṃsthāpanāya devānāṃ vapratrayasamāvṛtam //
For the installation of the deities, Viśvakarman has prescribed a sthaṇḍila (ritual platform) raised to half its breadth, and encircled by three vapras (protective earthen ramparts).
This verse is not about Pralaya; it gives Vastuvidya/ritual construction rules—specifically the proportions and enclosure of a sthaṇḍila used for installing deities.
It supports the dharma of patrons (kings/householders) who commission temples and rituals: correct measurements and protective layouts are presented as authoritative standards (attributed to Viśvakarman) for proper deity installation.
It specifies a proportional rule (platform height = half its breadth) and a protective/ritual boundary (three surrounding ramparts), indicating standardized sacred-ground preparation in Matsya Purana temple-ritual practice.