Matsya Purana — Kailasa
तेभ्यः शान्ती च मध्वी च द्वे नद्यौ सम्प्रसूयताम् किम्पुरुषाद्यानि यान्यष्टौ तेषु देवो न वर्षति //
tebhyaḥ śāntī ca madhvī ca dve nadyau samprasūyatām kimpuruṣādyāni yānyaṣṭau teṣu devo na varṣati //
From those regions are born the two rivers Śāntī and Madhvī. In the eight lands beginning with Kimpuruṣa, the god of rain does not send rainfall.
It does not describe Pralaya; it belongs to cosmography, stating the origin of two rivers and noting that certain mythic regions (starting with Kimpuruṣa) are not governed by ordinary rainfall.
Indirectly, it frames a worldview where climate and fertility may be seen as divinely regulated; in Purāṇic ethics, kings respond through dharmic governance—water management, ritual propriety, and protection of river systems—rather than assuming uniform natural conditions everywhere.
No direct Vāstu rule is stated, but the verse highlights rivers as sacred features; in Purāṇic practice, river-adjacent siting, tīrtha orientation, and water-source purity are foundational considerations for temple and settlement planning.