Matsya Purana — Genealogy from Budha to Purūravas and Yayāti; Raji’s war episode; the Paurava...
स शाश्वतीः समा राजा प्रजा धर्मेण पालयन् जराम् आर्छन् महाघोरां नाहुषो रूपनाशिनीम् //
sa śāśvatīḥ samā rājā prajā dharmeṇa pālayan jarām ārchan mahāghorāṃ nāhuṣo rūpanāśinīm //
That king Nāhuṣa, having protected his subjects through dharma for many enduring years, at last came upon dreadful old age—the destroyer of beauty and form.
This verse does not describe Pralaya; it highlights a different Puranic theme—impermanence—showing that even powerful kings are overtaken by time as old age destroys bodily form.
It frames ideal kingship as dharma-based protection of the people (prajā-pālana). Even when a ruler follows Rajadharma for many years, the verse reminds that worldly power is temporary, encouraging righteous governance without arrogance.
No Vastu, temple-building, or ritual procedure is stated in this verse; its takeaway is ethical and philosophical—time and old age humble all embodied beings.