So God Himself becomes so much disturbed that these rascals are simply killing. At that time, of course, the Buddha religion was not there. The so-called followers of the Vedic religion. In the Vedas there are sanction for killing animal in a special sacrifice, but people took it as general, and they began to kill animals like anything, under the protection of Veda. Therefore when Lord Buddha began to preach his philosophy, ahiṁsā, nonviolence, he did not accept the authority of Vedas. Because people will misuse it. Therefore he said that, "I don't care for your Vedas."
Just like Lord Jesus Christ rebelled against the Old Testament. He formulated his own testament, New Testament. Similarly, Lord Buddha also, he rejected Vedas and he presented his own philosophy: ahiṁsā, nonviolence, ahiṁsā paramo dharmaḥ, because he was very kind upon on the poor animals. Sadaya-hṛdaya darśita-paśu-ghātam. Paśu-ghātam means animal killing. Nindasi yajña-vidher ahaha śruti-jātam. Śruti-jātam. Śruti means Veda.
So in the Vedas, although there are, in particular cases, there are animal sacrifice . . . that is also very restricted. But we cannot say that there is no animal sacrifice. There is, in some cases. So Lord Buddha, nindasi, he decried, "No, I don't accept your Vedas." Therefore Buddha religion is different from Vedic religion, because he rejected Vedas. And the Vedic followers, because he rejected Vedic principles, Vedic followers said that he, "You are nāstika." Nāstika means unbeliever.
So Caitanya Mahāprabhu has explained this Buddha religion, veda nā māniyā bauddha haya ta' nāstika (CC Madhya 6.168). Because nāstika means . . . atheist means one who does not follow the principles of Veda. That is the, in every religion there is such restriction. Just like Christian religion. One who does not believe in Christianity, they are called heathens. Similarly, in Muhammadan religion also, one who does not believe in the Muhammadan religion, they are called kafirs.