Matsya Purana — Description of Gomedaka and Puṣkara Dvīpas; the Lokāloka Boundary; Ocean Tide...
द्वीपेषु तेषु सर्वेषु प्रजानां क्रमशस्तु वै आर्जवाद्ब्रह्मचर्येण सत्येन च दमेन च //
dvīpeṣu teṣu sarveṣu prajānāṃ kramaśastu vai ārjavādbrahmacaryeṇa satyena ca damena ca //
In all those continents (dvīpas), the people—each in due order—are sustained and prosper through straightforwardness (ārjava), the discipline of brahmacarya, truthfulness (satya), and self-restraint (dama).
This verse is not about Pralaya; it describes the ethical foundations—truth, self-restraint, brahmacarya, and straightforwardness—by which societies in the dvīpas are sustained in orderly fashion.
It presents core dharmic virtues that a king should cultivate and promote among subjects—upright governance rooted in satya (truth), dama (restraint), and disciplined conduct—while householders are guided to live with honesty, continence, and self-control.
No direct Vāstu or ritual procedure is stated; the verse supplies ethical prerequisites that tradition often treats as the inner foundation for successful rites and orderly civic life.