That is stated in the śāstra. Kṛṣṇa says, patraṁ puṣpaṁ phalaṁ toyaṁ yo me bhaktyā prayacchati (BG 9.26). Patram means vegetable, leaves; puṣpam, flower. In this way, whatever He says, you collect and offer to Him and take prasādam. Then you are not responsible. And if you collect for yourself even patram without offering to Kṛṣṇa, if you take, you are responsible for killing. It doesn't matter whether you kill a big animal or a small plant. You are responsible.
Just like a soldier: He kills hundreds and thousands of men and he is given gold medal. And as soon as he kills one man for his sense gratification he is hanged. Eh? Is it not? He can say, "I have killed so many men. At that time I was not hanged. I was given gold medal. How is that? (laughter) I have killed only one man. I am going to be hanged?" That is law. You cannot do anything on your own account, sense gratification. Then you are responsible. Yajñārthāt karmaṇo 'nyatra loko 'ya karma-bandhanaḥ.
Everything is stated. Read Bhagavad-gītā very thoroughly and try to understand. Then everything will be clear, how to live, how to organize society. We have to live. The same thing: we are also working, we are also eating, we are sleeping, we are also marrying—but according to Kṛṣṇa's direction. Then it is Kṛṣṇa conscious life and perfect life. And as soon as you do anything whimsically, at your will, then you are responsible. Kṛṣṇa or His representative. Kṛṣṇa is giving instruction, and His representative is explaining. In both ways Kṛṣṇa is helping. So even so much facility being offered to you, if you don't take advantage, then you are committing suicide. Ātmahā. Ātmahā. Just like the sea is now calm and quiet. If you want to go somewhere, take advantage of it. And if you start your boat while it is cyclone, then you'll be drowned.