Matsya Purana — Paurava Genealogy
ततःप्रभृति शापेन क्षत्रियस्य तु याजिनः उत्सन्ना याजिनो यज्ञे ततःप्रभृति सर्वशः //
tataḥprabhṛti śāpena kṣatriyasya tu yājinaḥ utsannā yājino yajñe tataḥprabhṛti sarvaśaḥ //
From that time onward, by the power of the curse, the Kṣatriya sacrificers (yājins) declined; from that time onward, those who performed offerings within the yajña rite were ruined in every respect.
This verse does not describe Pralaya; it explains a historical-moral decline: due to a curse, Kṣatriya patrons of sacrifice and sacrificial performance deteriorated from that point onward.
It frames yajña as a key royal (Kṣatriya) responsibility and warns that adharmic conduct leading to a curse can undermine a king’s capacity to sustain public rites, prosperity, and legitimacy.
The ritual takeaway is central: when the sacrificer (yājin) is impaired by curse or fault, yajña itself becomes unsustainable—highlighting the Matsya Purana’s emphasis on purity, eligibility, and continuity of Vedic rites.