Matsya Purana — Devayānī–Śarmiṣṭhā Dialogue: Yayāti’s Transgression
*ययातिरुवाच ऋतुं यो याच्यमानाया न ददाति पुमान्वृतः भ्रूणहेत्युच्यते ब्रह्मन् स चेह ब्रह्मवादिभिः //
*yayātiruvāca ṛtuṃ yo yācyamānāyā na dadāti pumānvṛtaḥ bhrūṇahetyucyate brahman sa ceha brahmavādibhiḥ //
Yayāti dijo: «Oh brahmán, el hombre que—siendo apto y obligado—no concede a su esposa el acceso en su estación fértil cuando ella lo solicita, es llamado “matador del embrión”; así lo afirman aquí quienes exponen el Veda».
This verse does not discuss Pralaya; it focuses on dharma within household life, specifically the moral duty connected to begetting progeny.
It frames a householder’s conjugal responsibility as a dharmic obligation: refusing one’s wife during her fertile period—despite being capable and bound by duty—is treated as a grave sin akin to harming progeny, which a king and householder must avoid.
No Vāstu or temple-architecture rule is stated here; the only technical point is the ritual-ethical concept of ṛtu (fertile season) as a dharma-relevant time in household life.