Matsya Purana — The Legend of Acchodā: Pitṛloka
तेनैव तत्कर्मफलं भुज्यते वरवर्णिनी सद्यः फलन्ति कर्माणि देवत्वे प्रेत्य मानुषे //
tenaiva tatkarmaphalaṃ bhujyate varavarṇinī sadyaḥ phalanti karmāṇi devatve pretya mānuṣe //
By that very agent the fruit of that deed is experienced, O fair-complexioned lady. Actions bear results—some at once, and others after death, whether in a divine state or in a human birth.
This verse does not describe Pralaya directly; it teaches the moral law that karma inevitably ripens, either immediately or after death in subsequent states of existence.
It reinforces accountability: a king or householder must act according to dharma because the same doer must experience the consequences—some in this life (social, political, bodily outcomes) and others after death (future birth or higher/lower state).
No Vastu or temple-building rule is stated here; the verse provides a general karmic framework that can be applied to ritual conduct—proper rites yield merit, improper acts yield harm—across lives.