Matsya Purana — Characteristics of Dvāpara and Kali Yugas
अधार्मिकाश्च ये केचित् तान्सर्वान्हन्ति सर्वशः उदीच्यान्मध्यदेशांश्च पार्वतीयांस्तथैव च //
adhārmikāśca ye kecit tānsarvānhanti sarvaśaḥ udīcyānmadhyadeśāṃśca pārvatīyāṃstathaiva ca //
Whoever are unrighteous, he destroys them all, in every way—whether they are in the northern regions, the Middle Country, or likewise among the mountain-dwellers.
This verse is not about pralaya; it focuses on governance—stating that unrighteousness must be eradicated across all regions, indicating a moral-social order rather than cosmic dissolution.
It supports rajadharma: a king must protect society by firmly punishing adharmic persons without regional bias—north, the Madhyadeśa, or mountainous areas—so that dharma remains stable.
No Vastu or ritual procedure is stated here; the significance is administrative—upholding dharma through danda (punishment) across the realm.