Matsya Purana — Saubhagya-Śayana Vow: Lalitā/Gaurī–Śiva Worship
क्षीरमाश्वयुजे मासि कार्त्तिके पृषदाज्यकम् मार्गे मासे तु गोमूत्रं पौषे संप्राशयेद्घृतम् //
kṣīramāśvayuje māsi kārttike pṛṣadājyakam mārge māse tu gomūtraṃ pauṣe saṃprāśayedghṛtam //
In the month of Āśvayuja one should take milk; in Kārttika, pṛṣadājya (a preparation of curd and ghee); in Mārgaśīrṣa, cow’s urine; and in Pauṣa one should partake of clarified butter (ghee, ghṛta).
This verse does not discuss Pralaya; it prescribes month-wise regulated intakes (niyamas) as part of vrata/dharma practice.
It functions as a dharmic regimen: a householder (and by extension a king as a model of dharma) follows month-specific dietary observances to cultivate discipline, purity, and ritual readiness.
The significance is ritual (vrata/śauca): milk, ghee, and gomūtra are treated as purifying/regulated substances in observance cycles; no Vāstu or temple-construction rule is stated in this verse.