Matsya Purana — Genealogy from Budha to Purūravas and Yayāti; Raji’s war episode; the Paurava...
कालेन महता पश्चात् कालधर्मम् उपेयिवान् पूरुवंशं प्रवक्ष्यामि शृणुध्वमृषिसत्तमाः यत्र ते भारता जाता भरतान्वयवर्धनाः //
kālena mahatā paścāt kāladharmam upeyivān pūruvaṃśaṃ pravakṣyāmi śṛṇudhvamṛṣisattamāḥ yatra te bhāratā jātā bharatānvayavardhanāḥ //
After a long passage of time, having met the law of Time (that is, having passed away), I shall now recount the lineage of Pūru. Listen, O best of sages—the line in which those Bharatas were born, enhancers of Bharata’s dynasty.
It does not describe cosmic pralaya; it uses “kāladharma” to indicate mortality—the inevitable passing of a person with time—before shifting the narration to the Puru dynasty.
Indirectly, it frames kingship within impermanence: even great rulers meet kāladharma, so dharma and the continuity of rightful lineage (vaṃśa) become central themes in the ensuing royal genealogy.
None is stated in this verse; its focus is genealogical—introducing the Puru line and the Bharatas—rather than Vastu Shastra, temple rules, or ritual procedure.