Shiva Purana

siva.sh/siva-purana/uma-samhita/10/45

यस्त्वेतां मानवो धेनुं श्रद्धया ह्यनुपूर्विकाम् ।। करोति सततं काले साग्नित्वायोपकल्प्यते ।। ४५ ।।

sanskrit

Any human being who offers this cow with faith is incomparable He does it constantly at the right time and is supposed to be with the fire.

english translation

yastvetAM mAnavo dhenuM zraddhayA hyanupUrvikAm || karoti satataM kAle sAgnitvAyopakalpyate || 45 ||

hk transliteration by Sanscript