Matsya Purana — Ritual Bathing
नमस्ते विष्णुरूपाय नमो विष्णुमुखाय वै सहस्ररश्मये नित्यं नमस्ते सर्वतेजसे //
namaste viṣṇurūpāya namo viṣṇumukhāya vai sahasraraśmaye nityaṃ namaste sarvatejase //
Salutations to You whose very form is Viṣṇu; salutations indeed to You whose face is Viṣṇu. Ever do I bow to You, the Thousand-rayed One—salutations to You who are the radiance of all.
While it does not describe Pralaya directly, it frames Vishnu as “sarvatejas” (the total radiance/source of all splendor), a theological basis used in the Matsya Purana to portray Vishnu as the sustaining and restorative power before and after cosmic dissolution.
As a stuti, it supports the Matsya Purana’s ethic that rulers and householders should begin actions with reverence and remembrance of the divine (smaraṇa and vandanā), cultivating humility, steadiness (nityam), and dharmic intention.
No direct Vastu or temple-measurement rule appears here; ritually, it functions as a namaskāra-mantra style salutation suitable for pūjā openings, invoking Vishnu’s all-pervading form and sun-like brilliance (sahasraraśmi) as auspicious protection.