Matsya Purana — Yayati’s Fall from Heaven and the Greatness of the Righteous
*इन्द्र उवाच यदावमंस्थाः सदृशः श्रेयसश्च पापीयसश् चाविदितप्रभावः तस्माल्लोका ह्य् अन्तवन्तस्तवेमे क्षीणे पुण्ये पतितो ऽस्यद्य राजन् //
*indra uvāca yadāvamaṃsthāḥ sadṛśaḥ śreyasaśca pāpīyasaś cāviditaprabhāvaḥ tasmāllokā hy antavantastaveme kṣīṇe puṇye patito 'syadya rājan //
Indra said: Since you have judged as equal what is truly better and what is worse, not discerning their real power, therefore these worlds of yours are indeed finite; when your merit was exhausted, you have fallen today, O king.
It does not describe cosmic Pralaya; it teaches a moral-cosmic principle that even heavenly worlds are finite and end when a being’s accumulated merit (puṇya) is exhausted.
It warns a ruler to discriminate between śreyas (true good rooted in dharma) and what is pāpīyas (worse/adharmic); confusing them leads to loss of spiritual “capital” and inevitable downfall—so right judgment and dharmic governance are essential.
No Vāstu or temple-ritual rule is stated directly; the ritual takeaway is ethical: sacrifices and gifts yield results only as long as their puṇya remains, so rites must be grounded in dharma and right discernment.