Matsya Purana — Genealogy from Budha to Purūravas and Yayāti; Raji’s war episode; the Paurava...
ययातेश्चाथ वयसा राज्यं पूरुरकारयत् ततो वर्षसहस्रान्ते ययातिरपराजितः //
yayāteścātha vayasā rājyaṃ pūrurakārayat tato varṣasahasrānte yayātiraparājitaḥ //
Then, as Yayāti grew advanced in age, he caused Pūru to assume the kingship. Thereafter, at the completion of a thousand years, Yayāti—the unconquered—departed from worldly rule.
This verse does not address Pralaya; it focuses on royal succession—Yayāti, having grown old, installs Pūru as king and later completes a long span of time (a thousand years).
It highlights a Rajadharma principle: orderly transfer of sovereignty when age advances, ensuring continuity of governance by installing a qualified successor (here, Pūru).
No Vāstu, temple-building, or ritual procedure is stated in this verse; its significance is genealogical and ethical (succession and the king’s timely withdrawal from rule).