Pradyumna: "...and there can be no question of refusal. That is called vaidhi, or regulated. One has to do it without any argument. Another..."
Prabhupāda: Yes. You cannot argue with the spiritual master. First of all, you have to select a spiritual master where you can completely surrender. And as soon... Just like Arjuna surrendered to Kṛṣṇa. When he saw that "The questions which have arisen in my mind, it cannot be solved by ordinary person," therefore he selected. He told Him that "I can understand, without Your Lordship, nobody can mitigate all the doubts in my mind." Tasmād guruṁ prapadyeta (SB 11.3.21). Śiṣyas te 'haṁ śādhi mām (BG 2.7). Therefore original spiritual master is Kṛṣṇa. Kṛṣṇa is original spiritual master. Tene brahma hṛdā ādi-kavaye. Kṛṣṇa first instructed Brahma, Ādi-kavi. From Brahma, we have got these Vedas, Vedic knowledge. Therefore, Kṛṣṇa is the original spiritual master. Aham evāsam agre. Before creation, Kṛṣṇa was there. Aham ādir hi devānām (Bg 10.2). Kṛṣṇa is the origin of all the devas. Devas means Brahmā, Viṣṇu, Maheśvara, then all other demigods. So, in this way, Kṛṣṇa is the original spiritual master. Just like He's the spiritual master of Arjuna. So study of Bhagavad-gītā means if you follow the footprints of Arjuna, then you are also as good as Arjuna. Not as good; I mean to say, that your knowledge is perfect. Perfect in this sense: that Arjuna accepted Kṛṣṇa as Paraṁ Brahma; you accept Kṛṣṇa as Paraṁ Brahma; then your study of Bhagavad-gītā is perfect. And if you make your so-called erudite scholarship, commentary, "It is not to Kṛṣṇa," then you are spoiled. Your life is spoiled, your study is spoiled. Sādhu-mārga-anugamanam.
So if you want to study Bhagavad-gītā, you follow what Arjuna says. Where is the difficulty? What Arjuna has said about Kṛṣṇa, that is already there in the Bhagavad-gītā. Arjuna said, paraṁ brahma paraṁ dhāma pavitraṁ paramaṁ bhavān, śāṣvataṁ puruṣam ādi (BG 10.12). You accept Kṛṣṇa. Why do you try to make minus Kṛṣṇa Bhagavad-gītā? This is rascaldom. That is not study of Bhagavad-gītā. Bhagavad-gītā as it is. Study Bhagavad-gītā as it is; then you'll be benefited. And actually we are seeing that. We are presenting Bhagavad-gītā as it is all over the world, and it is becoming successful. Not adulteration. That is spoiling. Adulteration means... The example is given..., it was given by my Guru Mahārāja that there is a cup of sweet rice, and you mix with some grains of sand. Then it is, whole thing is spoiled. You cannot comment on Bhagavad-gītā according to your whims. Kṛṣṇa did not leave Bhagavad-gītā to be understood by your commentation. Try to understand Bhagavad-gītā as it is. You'll be benefited. That is sādhu-mārga-anugamanam.