Matsya Purana — The Karmic Cause of Purūravas’ Beauty and Fortune
स तु मद्रपती राजा यस्तु नाम्ना पुरूरवाः तस्मिञ्जन्मन्यसौ विप्रो द्वादश्यां तु सदानघ //
sa tu madrapatī rājā yastu nāmnā purūravāḥ tasmiñjanmanyasau vipro dvādaśyāṃ tu sadānagha //
That king—lord of Madra—was renowned by the name Purūravas. In that very birth, that brāhmaṇa was ever sinless, O faultless one, and was associated with Dvādaśī, the twelfth lunar day.
This verse is genealogical rather than cosmological; it does not discuss Pralaya, but preserves dynastic memory by naming a king (Purūravas) and his regional sovereignty (Madra).
By identifying Purūravas as a regional ruler, the verse situates him in the dharmic ideal of kingship—protecting a realm and sustaining social order—while also linking the narrative to ritual time (Dvādaśī), a common marker for vows and observances.
The explicit ritual marker is Dvādaśī (the 12th lunar day), widely connected with Vaiṣṇava observances and vrata timing; no Vāstu/temple-building rule is stated in this specific verse.