Matsya Purana — The Greatness and Procedure of the Aṅgāra
सुवर्णशृङ्गीं कपिलाम् अथार्च्य रौप्यैः सुरैः कांस्यदोहां सवत्साम् धुरंधरं रक्तमतीव सौम्यं धान्यानि सप्ताम्बरसंयुतानि //
suvarṇaśṛṅgīṃ kapilām athārcya raupyaiḥ suraiḥ kāṃsyadohāṃ savatsām dhuraṃdharaṃ raktamatīva saumyaṃ dhānyāni saptāmbarasaṃyutāni //
After duly worshipping a tawny (kapilā) cow whose horns are sheathed in gold and adorning her with silver ornaments, one should offer a milch-cow that yields her milk into a bronze vessel, together with her calf—fit for the yoke, red-hued, and exceedingly gentle—along with grains, accompanied by seven garments.
This verse is not about Pralaya; it belongs to the Matsya Purana’s Dāna–Dharma instructions, detailing auspicious specifications for ritual gifting (especially go-dāna) to generate merit.
It frames a householder/kingly duty as charitable giving done with proper ritual respect: worship first, then donate a healthy, gentle cow with her calf, plus supporting gifts (grains and cloth), reflecting disciplined generosity rather than casual almsgiving.
The significance is ritual (not architectural): the verse prescribes the ideal attributes and accessories for go-dāna—gold-sheathed horns, silver adornment, milking into a bronze vessel, inclusion of the calf, and the addition of grains and seven garments.