Matsya Purana — Mahāgaurī’s Entry
निष्क्रान्ते तप्तहेमाभं विततं शंकराश्रमे तस्मिन्सरो महज्जातं विमलं बहुयोजनम् //
niṣkrānte taptahemābhaṃ vitataṃ śaṃkarāśrame tasminsaro mahajjātaṃ vimalaṃ bahuyojanam //
When that (radiant presence) had emerged, the Śaṅkara-hermitage shone forth like molten gold; and there, a vast lake came into being—spotless and extending for many yojanas.
It does not describe cosmic Pralaya; it depicts localized sacred manifestation—an ashram radiance and the arising of a vast, pure lake as a holy feature of the landscape.
Indirectly, it supports dharmic life through tīrtha culture: rulers and householders are encouraged in Purāṇic ethics to protect sacred sites, maintain clean water bodies, and sponsor pilgrimage and ritual purity practices.
The key ritual takeaway is the prominence of a vimala (spotless) sarovara near an ashram—suggesting an auspicious water source for स्नान (ritual bathing), purification rites, and hermitage-centered worship; it also aligns with Vastu ideals that emphasize pure water bodies as auspicious landscape elements.