Matsya Purana — Vrata-Ṣaṣṭhī: The Sixty Sacred Vows
वस्त्रयुग्मं च विप्राय तेजस्वी स भवेदिह रुद्रलोकमवाप्नोति दीप्तिव्रतमिदं स्मृतम् //
vastrayugmaṃ ca viprāya tejasvī sa bhavediha rudralokamavāpnoti dīptivratamidaṃ smṛtam //
By giving a pair of garments to a brāhmaṇa, one becomes radiant in this very life and attains Rudra’s world. This is remembered as the Dīpti-vrata, the vow that bestows brilliance.
This verse does not discuss Pralaya; it teaches dharma through dāna (charitable gifting) and describes its karmic fruit—radiance in life and attainment of Rudraloka.
It frames a practical dharma-duty: a householder (and by extension a king as patron of dharma) should support learned brāhmaṇas through gifts. Such vipra-dāna is presented as a vrata that purifies conduct and yields both worldly esteem (tejas) and posthumous merit.
The ritual point is vrata-based dāna: donating a pair of garments as a prescribed observance (Dīpti-vrata). No Vāstu or temple-building rule is stated in this specific śloka.