Matsya Purana — Division of Bhārata-varṣa
अभिज्ञातास्ततश्चान्ये विपुलाश्चित्रसानवः अन्ये तेभ्यः परिज्ञाता ह्रस्वा ह्रस्वोपजीविनः //
abhijñātāstataścānye vipulāścitrasānavaḥ anye tebhyaḥ parijñātā hrasvā hrasvopajīvinaḥ //
And then there were other peoples as well—well-known and numerous, dwelling on varied ridges and uplands. Others, known from among them, were of short stature, living by modest (small) means.
This verse does not describe Pralaya directly; it functions as a descriptive catalogue of human groups—contrasting numerous upland dwellers with other identified communities of shorter stature and simpler livelihoods.
By distinguishing communities by habitat and means of subsistence, the verse supports a king’s dharma of governance adapted to regional conditions—protecting diverse populations and ensuring fair provisioning and order according to their livelihoods.
No explicit Vastu or ritual rule is stated; however, the mention of ridge/upland dwellers (sānavaḥ) implicitly reflects settlement geography, a factor later used in Vastu-oriented site selection (desa/kshetra suitability).