Matsya Purana — Solar Dynasty Prelude: Vivasvān–Saṃjñā–Chāyā
शशाप च यमं छाया सक्षतः कृमिसंयुतः पादो ऽयमेको भविता पूयशोणितविस्रवः //
śaśāpa ca yamaṃ chāyā sakṣataḥ kṛmisaṃyutaḥ pādo 'yameko bhavitā pūyaśoṇitavisravaḥ //
Then Chāyā cursed Yama: “One of your feet shall become ulcerated and infested with worms, and it will ooze pus and blood.”
This verse does not describe pralaya; it illustrates moral causality (a śāpa/curse) within Purāṇic narrative logic, where ethical or relational conflict manifests as a concrete bodily consequence.
By portraying Yama—the archetype of justice—receiving a curse with tangible suffering, the verse reinforces the Matsya Purana’s ethical theme that even powerful authorities must act with restraint and right conduct, since wrongdoing invites painful repercussions.
No direct Vāstu or ritual procedure is stated; the takeaway is symbolic and ethical rather than architectural—highlighting impurity (pus, blood, worms) as a sign of the consequences of a curse and moral disorder.