Matsya Purana — Mandāra-Saptamī Vrata
एतदेव व्रतान्ते तु निधाय कलशोपरि गोभिर्विभवतः सार्धं दातव्यं भूतिमिच्छता //
etadeva vratānte tu nidhāya kalaśopari gobhirvibhavataḥ sārdhaṃ dātavyaṃ bhūtimicchatā //
At the conclusion of the vow (vrata), placing precisely this upon the top of the ritual kalaśa, one who desires prosperity should donate it together with cows, according to one’s means.
This verse does not discuss Pralaya; it focuses on vrata-conclusion procedure—placing an offering on the kalaśa and completing the rite through appropriate charity for prosperity.
It frames dharmic duty as completing vows with dāna: a householder (and likewise a ruler) should give gifts—especially cows—commensurate with wealth, treating charity as an ethical completion of ritual and a means to social and spiritual welfare.
Ritually, it prescribes placing the designated offering on the kalaśa (a key consecration vessel) and finalizing the vrata with gau-dāna, emphasizing correct end-rites (vratānta) and auspicious completion practices.