We are maintaining cows there, protecting cows, because cow protection is one of the item for Kṛṣṇa consciousness people. Especially Kṛṣṇa is worshiped:
- namo brahmaṇya-devāya
- go-brāhmaṇa-hitāya ca
- jagad-dhitāya kṛṣṇāya
- govindāya namo namaḥ
- (CC Madhya 13.77)
He is immediately referred that, "You are brahmaṇya-deva go-brāhmaṇa-hitāya ca, the benedictor of the cows and the brahmins." Why? Jagad . . . "Next, You are benedictor to the general people in the world. First the go-brāhmaṇa-hitāya ca." Why? Why Kṛṣṇa should be especially interested with go and brāhmaṇa? These are things.
Now, when Kṛṣṇa was child, He was crawling. This is His pastime. By crawling He used to go to the cowshed and catch one calf's tail, and the calf will drag Him and smear His body in cow dung. He enjoyed it. So cow dung is actually so pure. You can test it. One chemical analyzer in Calcutta, Dr. Lal Madhav Ghosh, he tested. He found all antiseptic properties, although it is stool.
So that is the nature of Vedic injunction. You accept it. You are benefited. You save the time. Whatever is stated in the Vedas, if you accept, that you don't require to make research how to find out God or how to find out yourself. Everything is there, simply if you accept it. Not blindly. If you want to test it, you can test. Just like this cow dung: in the Vedas it is said it is pure, but if you want to test chemically, you will find it pure. That is Vedic injunction.
Therefore our Vedic injunctions are very supreme evidence, Veda-pramāṇam, śabda-pramāṇam. There are three kinds of evidences. First evidence is direct perception—I see personally. And then historical evidence, and then śabda-pramāṇa. Śabda-pramāṇa means evidence from the Vedas.