Matsya Purana — Lineage of Yayāti through Yadu and the Deeds of Kārtavīrya Arjuna
तेनेयं पृथिवी सर्वा सप्तद्वीपा सपर्वता सप्तोदधिपरिक्षिप्ता क्षात्त्रेण विधिना जिता //
teneyaṃ pṛthivī sarvā saptadvīpā saparvatā saptodadhiparikṣiptā kṣāttreṇa vidhinā jitā //
By him, this entire earth—together with its seven continents and their mountains, encircled by the seven oceans—was conquered in accordance with the lawful code of kṣatriya rule.
This verse is not about pralaya; it presents Purāṇic cosmography (seven continents and oceans) to frame a king’s worldly sovereignty and conquest.
It emphasizes that conquest and political control must follow kṣātra-vidhi—rule-bound, dharmic kingship—implying governance by lawful means rather than mere force.
No direct Vāstu or ritual procedure is stated; the key takeaway is the Purāṇic ‘sapta-dvīpa’ world-model often used as a backdrop for royal rites like digvijaya and sovereignty claims.