tam-that cow; agni-hotrim-absolutely necessary for the production of yogurt, milk and ghee to offer as oblations in the fire; rsayah-sages who perform such sacrifices; jagrhuh-took in charge; brahma-vadinah-because such sages know the Vedic ritualistic ceremonies; yajnasya-of sacrifice; deva-yanasya-which fulfills the desire to be elevated to the higher planetary systems and to Brahmaloka; medhyaya-fit for offering oblations; havise-for the sake of pure clarified butter; nrpa-O King.