Tasmād..., tan-māyā-mohitatvād na jānanti ity uktam aviṣayatvāc ca tasya ity āha. So Śrīdhāra Swami give his comment that "Those who are," I mean to say, "involved with the material energy..." This material energy means the three modes of passion, ignorance, and goodness. Tan-māyā-mohita. This is the moha. Moha means illusion. Anyone who is contaminated by these three qualities of māyā, he is supposed to be involved in māyika, or material existence. Tan-māyā-mohitatvād na jānanti: "And anyone who is involved with the material qualities of this external energy, they cannot understand what is God." It is not possible. Aviṣayatvāc ca. This is not their subject matter at all. The subject matter for them different. Therefore we see. They are becoming educated, scientists, philosophers, but they do not understand what is God. Avisayatvāc ca. It is not their subject matter. That I repeatedly say, that one who is not a devotee of Kṛṣṇa, it is, Bhagavad-gītā is not a subject matter for their study, what to speak of commenting upon it? He has no business to comment on Bhagavad-gītā because it is not their subject matter. This should be very distinctly understood. There is a Bengali parable, ādhāra vyapari yahāre khabola (?). Ādhāra vyapari, a merchant dealing in ginger, so he is taking information, "What about the shipping one..., just like one cartload or one ship full of ginger?" So ādhāre vyapari means he has not very large quantity to sell. Ginger is taken, very little quantity. So ginger merchant, if he has got stock, say, one bag, it will take months together to sell it. And if he thinks that "I will stock hundreds of bags," it is useless for him. That is not his subject. But one who sells rice or wheat, that is in great demand. That he can stock and talk of large shipment. Similarly, those who are already engrossed in material qualities, the science of God is not their subject matter at all. So that is the test. Just like who shall be the guru? Whose subject matter is only Kṛṣṇa or God, he shall be guru, not an amateur man. He is doing some other business, and in some pastime he makes a guru business. No, that is not their subject matter. The subject matter is different.
Therefore Śrīdhāra Swami says, aviṣayatvāc ca tasya ity āha, gobhir indriyair na cittena: "Because the subject matter is not for them, however they may exercise their senses, gobhiḥ..." Go means indra (indriya). Simply by exercising... Just like there are so many yogis. They exercise their senses only—yama, niyama, prāṇāyāma—senses. But it is not their subject matter to understand God. They may show some jugglery or some gymnastic, wonderful, or they may get some material perfection, animā... The eight kinds of perfection in yoga system... One can become very small. Just like there was a trailiṅga swami in Benares. He was staying naked on the street, and the police objected, and he was put into police custody. He again came out. That means people became more devoted to him. But still... This is a perfection by the gymnastic of yoga process, but that does not mean he knows God. That does not mean. There was another yogi in Benares. Anyone who would come to him, immediately in a pot he will present two rasagullā. And after eating two rasagullā, the man will be captivated, and big man, manager of bank and this and that, and they... They become captivated. He does not know "What he has given me? Two rasagullā. Say, two annas, or four annas at most." So, but they become captivated: "Oh, here is a yogi. He can manufacture immediately." In Calcutta I was passing in a street, Cornwallis Street, and there was some crowd, and I entered that crowd, long ago, when I was young man. So I saw that he was a Muhammadan (indistinct). He was giving everyone some pieces of grass, straw. So he gave me one. So I saw it is raisin, kismis. You see? So I immediate threw it away and went away. So some yogi can show. He'll press his beads, and there milk will come. So there are so many yogic fantasies. But that does not mean that he knows God. Or a great philosopher like Dr. Radhakrishnan, that does not mean he knows God.