Matsya Purana — Inquiry into Taraka’s Slaying and the Prelude to Guha
पक्षिणो विनतापुत्रा गरुडप्रमुखाः स्मृताः नागाः कद्रूसुता ज्ञेयाः शेषाश्चान्ये ऽपि जन्तवः //
pakṣiṇo vinatāputrā garuḍapramukhāḥ smṛtāḥ nāgāḥ kadrūsutā jñeyāḥ śeṣāścānye 'pi jantavaḥ //
Birds are said to be the sons of Vinatā, with Garuḍa foremost among them. The nāgas (serpent-beings) should be known as the offspring of Kadrū; and so too are Śeṣa and other living creatures of that class.
It does not describe Pralaya directly; instead, it classifies beings by mythic lineage, linking birds to Vinatā and serpent-beings (nāgas) to Kadrū—part of the Purana’s broader creation-and-population framework.
Indirectly, it supports dharmic governance and household conduct by grounding social-religious knowledge in recognized lineages—useful for rites, omens, and respectful handling of sacred beings like Garuḍa-associated birds and nāga traditions.
No Vāstu rule is stated, but ritually the verse underpins nāga-related and Garuḍa-related observances (protective rites, serpent pacification traditions, and iconographic associations) by identifying their primordial origins.