Matsya Purana — The Pushkara Manifestation
तपःश्रेष्ठौ गुणश्रेष्ठौ त्रिदिवस्यापि संमतौ दनुस्तु दानवाञ्जज्ञे दितिर्दैत्यान्व्यजायत //
tapaḥśreṣṭhau guṇaśreṣṭhau tridivasyāpi saṃmatau danustu dānavāñjajñe ditirdaityānvyajāyata //
Two were renowned as foremost in austerity and foremost in virtue, celebrated even among the gods of heaven. From Danu were born the Dānavas, and from Diti were born the Daityas.
It does not describe Pralaya; it gives a genealogical origin statement—Danu is the mother-source of the Dānavas and Diti of the Daityas—within the broader cosmic history that continues across cycles.
Indirectly, it supports the Purāṇic ideal that rulers and householders should know lineage and traditional classifications (gotra/vaṃśa narratives) to preserve dharma, social memory, and proper ritual-historical continuity.
No Vāstu or temple-ritual rule is stated in this verse; its focus is on lineage terminology (Daitya/Dānava) used elsewhere to contextualize conflicts, vows, and ritual narratives in Purāṇic history.