Just like you'll see in the Bhagavad-gītā that Arjuna, in the beginning he was arguing with Kṛṣṇa, between friend and friend, but when he surrendered himself as student, śiṣyas te 'haṁ śādhi māṁ prapannam . . . (BG 2.7). He said: "My dear Kṛṣṇa, now I am surrendering unto You. I accept You as my spiritual master." Śiṣyas te aham: "I am Your disciple, not friend." Because friendly talks, arguments, there is no end. But when there is talk between spiritual master and disciple, there is no argument. No argument. As soon as the spiritual master says: "This is to be done," it is to be done. That's all, final.
So you'll find, throughout the whole instruction of Bhagavad-gītā, not that blindly. There is submissive presentation: "Kṛṣṇa, I cannot understand this." That is allowed. But it is not that you have to change the decision of the spiritual master. No. If you cannot understand, it is . . . you should know it that, "Due to my less intelligence, I just now do not understand what the spiritual master said, but that is already concluded. But I may try to understand, so that I may not be misleading." That is the position. So just see. Caitanya Mahāprabhu says that, Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare / Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare.' "
Now Caitanya Mahāprabhu's explaining, ei ājñā pāñā nāma la-i anukṣaṇa (CC Adi 7.77): "After reception of this order from My spiritual master, I have engaged Myself constantly in chanting Hare Kṛṣṇa." That is disciplic succession.