Matsya Purana — Uma’s Austerities and the Slaying of the Deceiver Asura ĀḌi
शैशिरासु च रात्रीषु शुष्कस्थण्डिलशायिनी एवं साधयती तत्र तपसा संव्यवस्थिता //
śaiśirāsu ca rātrīṣu śuṣkasthaṇḍilaśāyinī evaṃ sādhayatī tatra tapasā saṃvyavasthitā //
And on the wintry nights, lying upon a dry patch of bare ground, she thus carried out her observance there—steadfast and fully disciplined in austerity.
This verse does not address pralaya directly; it highlights disciplined austerity (tapas) as a means of spiritual accomplishment.
It models restraint and regulated conduct; in Matsya Purana’s ethical framework, rulers and householders are urged to cultivate self-control and disciplined living (even if not adopting extreme asceticism).
Ritually, it implies an austerity-setting practice: sleeping on a dry, bare earthen spot (sthaṇḍila) as part of a vrata, emphasizing simplicity and bodily restraint rather than temple architecture.