Kutadanta accused the Buddha: "I am told that you teach the law of life and the way, yet you tear down religion. Your followers despise rituals and abandon sacrifices. But reverence for the gods can only be shown through sacrifices. The very nature of religion is that of worship and sacrifice."
The Buddha replied: "Greater than the massacring of bullocks is the sacrifice of self. He who offers up his evil desires will see the uselessness of slaughtering animals at the altar. Blood has no power to cleanse, but the giving up of harmful actions will make the heart whole. Better than worshiping gods is following the ways of goodness."