So guru is Kṛṣṇa. Here is the example given by Arjuna. Pṛcchāmi tvām. Who is that tvām? Kṛṣṇa. "Why you are asking Me?" Dharma-sammūḍha-cetāḥ (BG 2.7). "I am bewildered in my duties, dharma." Dharma means duty. Dharmaṁ tu sākṣād bhagavat-praṇītam (SB 6.3.19). Sammūḍha-cetāḥ. "So what I have to do?" Yac chreyaḥ. "What is actually my duty?" Śreyaḥ. Śreyaḥ and preyaḥ. Preyaḥ... They are two things. Preya means which I like immediately, very nice. And śreya means ultimate goal. They are two things. Just like a child wants to play all day. That is childish nature. That is śreya. And preya means he must take education so that in future his life will be settled up. That is preya, śreya. So Arjuna is asking not preya. He's asking instruction from Kṛṣṇa not for the purpose of confirming his śreya. Śreya means immediately he was thinking that: "I shall be happy by not fighting, not by killing my kinsmen." That, he was, like a child, he was thinking. Śreya. But when he came to his consciousness... Not actually consciousness, because he's intelligent. He's asking for preya, uh, śreya. Yac chreyaḥ syāt. "What is the, actually, my ultimate goal of life?" Yac chreyaḥ syāt. Yac chreyaḥ syāt niścitaṁ (BG 2.7). Niścitam means fixed-up, without any mistake. Niścitam. In Bhāgavata, there is, called niścitaṁ. Niścitam means you haven't got to make research. It is already settled up. "This is the decision:" Because we, with our teeny brain, we cannot find out what is the actual niścitaṁ, fixed-up sreya. That we do not know. That you have to ask from Kṛṣṇa. Or his representative. These are the things. Yac chreya syāt niścitaṁ brūhi tan me.
So... "Kindly speak to me that." "So why shall I speak to you?" Here says: śiṣyas te 'ham (BG 2.7). "Now I am accepting You as my guru. I become Your śiṣya." Śiṣya means: "Whatever you'll say, I'll accept." That is śiṣya. The śiṣya word comes from śas-dhātu. Śas-dhātu. Śāstra. Śāstra. Śāsana. Śiṣya. These are from the same root. Śas-dhātu. Śas-dhātu means rule, ruling. So we can rule in various ways. We can be ruled, becoming a śiṣya of a proper guru. That is śas-dhātu. Or we can be ruled by śāstra, weapon. Just like king has got weapon. If you don't follow the king's instruction or government's instruction, then there is police force, military force. That is śāstra. And there is śāstra also. Śāstra means book, scripture. Just like Bhagavad-gītā. Everything is there. So we must be ruled, either by śāstra, śāstra or guru. Or becoming śiṣya. Therefore it is said: śiṣyas te 'ham (BG 2.7). "I become voluntarily... I surrender unto You." "Now you become śiṣya. What is the proof that you have become My śiṣya?" Śādhi māṁ tvāṁ prapannam. "Now I am fully surrender." Prapannam.