Aśvamedha sacrifice, gomedha sacrifice, sannyāsa, and to get child by devara, husband's younger brother, these things are forbidden in this age.
So it was the duty of the kṣatriya to fight. Therefore Kṛṣṇa is condemning his behavior that, "This is not befitting a kṣatriya. By this action, you will be defamed." Akīrti-karam arjuna (BG 2.2). "You are such a nice fighter, soldier, and if you cease to fight, then the other party will defame you in so many ways. What you are thinking of? Especially you are My friend. I am standing here. Despite My becoming your chariot driver, if you decline to fight, certainly it will be a great havoc. Don't do this."
Therefore He says, anārya-juṣṭam asvargyam. Asvargyam means "You cannot be promoted to the heavenly planet." It is said that a kṣatriya who dies in the fight is immediately promoted to the heavenly planet. But because he is dying for the good cause, therefore he is promoted. Asvargyam akīrti-karam. "It is defamation on your part." So:
- klaibyaṁ mā sma gamaḥ pārtha
- naitat tvayy upapadyate
- kṣudraṁ hṛdaya-daurbalyaṁ
- tyaktvottiṣṭha parantapa
- (BG 2.3)
Parantapa means one who can give trouble to the enemies. It is the duty of the kṣatriya. Enemies, aggressor, they should be killed. There is no ātatāyī. Ātatāyī means one who is aggressor. One who kidnaps one's wife, one who take away by force one's wealth, one who sets fire in one's house, these are called aggressor. So aggressor should be killed. Aggressor should be given trouble.
So Kṛṣṇa does not teach unnecessarily nonviolence. If kṣatriya becomes nonviolent, then the whole state will be in chaos. They must learn how to kill any criminal. He should be immediately killed. Just like Mahārāja Parīkṣit, Arjuna's grandson, when he was touring in his empire . . .
The whole world was at that time Indian empire. Not Indian exactly. Bhārata-varṣa. Now we have imitated some name, Bhārata, the "Indian," "Hindustan." But formerly the whole planet was known as Bhārata-varṣa. So when he saw that one black man was trying to kill one cow, immediately he took his sword: "Immediately I shall kill you. Who are you, killing cows in my kingdom?" This is kṣatriya's business.
So . . . but there is no kṣatriya now, because so many cows are being killed. Who is . . . nobody is protesting. It is the duty of the kṣatriya to protect every living entity born in the land, in his kingdom. It is not that, as it is going on now, that only the human beings should be protected and not the animals. No animal could be killed except in sacrifice, as prescribed.