Matsya Purana — Solar Dynasty Prelude: Vivasvān–Saṃjñā–Chāyā
नासापुटाभ्यामुत्सृष्टं परो ऽयमिति शङ्कया तद्रेतसस् ततो जाताव् अश्विनाव् इति निश्चितम् //
nāsāpuṭābhyāmutsṛṣṭaṃ paro 'yamiti śaṅkayā tadretasas tato jātāv aśvināv iti niścitam //
Suspecting, “This is someone else (not my own),” he discharged that semen through the nostrils; from that seed, the two Aśvins were born—so it is firmly held.
This verse is not about Pralaya; it preserves a cosmogonic/etiological tradition explaining the origin of the Aśvin twins from a discharged “seed,” emphasizing divine births through extraordinary means.
Directly it does not legislate royal or household duties; indirectly it situates later dharma-teachings within a sacred genealogy where the Aśvins (healers) symbolize protection of life and welfare—core aims of righteous kingship and household responsibility.
No Vāstu or temple-rule appears here; the ritual takeaway is mythic-etiological—affirming the Aśvins’ divine origin, which underlies their invocation in healing rites and auspicious ceremonies in broader Vedic-Puranic practice.