Matsya Purana — Bhīma-Dvādaśī
गव्येन पयसा सिद्धां कृसरामथ वाग्यतः सर्पिषा सह भुक्त्वा च गत्वा शतपदं बुधः //
gavyena payasā siddhāṃ kṛsarāmatha vāgyataḥ sarpiṣā saha bhuktvā ca gatvā śatapadaṃ budhaḥ //
Having prepared kṛsarā (a rice-and-pulse dish) with cow’s milk, and keeping his speech restrained, the wise man should eat it together with ghee; then, after eating, he should walk a hundred steps.
This verse is not about Pralaya; it belongs to ritual-dharma guidance, prescribing a disciplined food practice (kṛsarā with milk and ghee), controlled speech, and a post-meal observance.
It models āhāra-śuddhi and self-restraint: a householder (and likewise a king observing vows) should follow regulated diet, restraint of speech, and mindful conduct after eating—typical of vrata/prāyaścitta discipline.
Ritually, it specifies a vow/expiation pattern: preparing kṛsarā with cow’s milk, eating it with ghee in silence (or controlled speech), and completing the act by walking a hundred steps—an observance linked to purity and discipline rather than temple architecture.