Matsya Purana — Duties of the Four Āśramas and the Power of Mauna
यावत्प्राणाभिसंधानं तावदिच्छेच्च भोजनम् तदास्य वसतो ग्रामे ऽरण्यं भवति पृष्ठतः //
yāvatprāṇābhisaṃdhānaṃ tāvadicchecca bhojanam tadāsya vasato grāme 'raṇyaṃ bhavati pṛṣṭhataḥ //
One should desire food only so long as it sustains life. For the person who lives thus in a village, the wilderness is, as it were, left behind him.
It does not describe Pralaya directly; it teaches a survival-level principle—take only what sustains life—an ethic that also supports stability in times of scarcity and upheaval.
It promotes restraint (mitāhāra) and non-indulgence: a householder (and likewise a king) should consume resources only to maintain life and duty, thereby preventing greed, dependency, and social harm.
No explicit Vastu or ritual rule is stated; the practical takeaway is lifestyle-discipline—living in a settled community with self-restraint yields the peace normally sought by retreating to the forest.