Dayā. One must be merciful. Dayā means... When a man is suffering a fellow man, another fellow man must feel for it. That is called dayā. There are two things: dayā and sevā. Sevā means to give service to the superior, and dayā means to give service to the inferior. Both of them are service. Dayā, I mean to say... A man is suffering. He is in helpless condition. Just like in hospital, those who are patients, who are diseased, they go to the hospital There is also sevā. The nurse is serving. The doctor is serving. But that is not sevā. That is called dayā. He is not obliged, but out of his compassion, he's giving service to the patient. That is called dayā. And sevā means superior. Just like spiritual master. Sevayā. Tad viddhi praṇipātena paripraśnena sevayā (BG 4.34). Because the Vedic injunction is that "You must go to a spiritual master." Tad-vijñānārthaṁ sa gurum evābhigacchet (MU 1.2.12). Abhigacchet means "must." There is no alternative. If you're actually interested in transcendental knowledge, tad-vijñānam... Tad-vijñānam means transcendental knowledge. Athāto brahma jijñāsā. And the human life is meant for tad-vijñānam, to understand.
So tad-vijñānārthaṁ sa gurum evābhigacchet. So there, how to learn from guru, that is also stated. Tad viddhi: try to learn from him... Tad viddhi praṇipātena. First of all surrender yourself. You cannot go to any person for learning anything where there is no sense of surrender. I accept a guru, but in my mind I remain independent, "Oh, why shall I abide by the orders of guru?" That means there is no surrender. There is no surrender. It is false. It is just to satisfy some motive, but that will not help. If you have got any duplicity in your mind, then you'll never be successful in any field of activities. So the process is... Tad viddhi praṇipātena (BG 4.34). Must be surrendered. Praṇipāta means prakṛṣṭa-rūpeṇa nipāta. And therefore, unless you find somebody where you can fully surrender, don't accept guru. That is cheating. Unless you are fully confident that "I am surrendering to this person. He is... Actually he is superior to me. He can give proper knowledge..."
So therefore the process is before accepting a guru, one must hear him at least for one year. And when he's convinced that "Here is actually a guru who can teach me," then you accept him, guru. Don't accept whimsically. This system now should stop that somebody's coming for three days—"Prabhupāda, initiate him." Why? First of all see whether he's fit for becoming a disciple; then recommend. Otherwise, don't recommend. Because the chief recommendation is creating havoc. One is not fit for becoming a student, disciple, and he's accepting discipleship, and after three days he's going away. This should not be allowed. Therefore, in the Bhakti-rasāmṛta..., er, Hari-bhakti-vilāsa by Sanātana Gosvāmī it is directed that the spiritual master and the disciple must meet together at least for one year so that the disciple may also understand that "Here is a person whom I can accept as my guru," and the guru also can see that "Here is a person who is fit for becoming my disciple." Then the business is nice. Because the business is tad viddhi praṇipātena (BG 4.34), one must be prepared to surrender. So unless that character is there, surrendering, how he can become a disciple? It is not possible.
So these are very difficult things, but because it is the age of Kali, kālena balīyasā, as we studied yesterday, that kālena vā te balināṁ balīyasā: time is very hard time. Therefore Śrī Caitanya Mahāprabhu has said that it is very difficult time, kalau. It is not Śrī Caitanya Mahāprabhu's version; it is the Vedic version. Kalau nāsty eva nāsty eva nāsty eva. Simply chant Hare Kṛṣṇa mantra. This will clarify your heart. Then you can understand who is guru, where to surrender, where to take lesson. In this way we can make... Haphazardly, if we accept, then there will be failure.
So satyaṁ śaucaṁ dayā. To accept guru, there is also service. And to give service to an inferior person who is suffering, that is also service. The one service is called dayā, and the other service is called sevā. So if you want to realize God, then the other service, sevā, not dayā. You cannot show your mercy to God. God is full. There is no need of your showing mercy. That sevā. Two kinds of service. One is called dayā, and another is called sevā. Sevonmukhe hi jihvādau svayam eva sphuraty adaḥ. If you want to know what is God, then the other service, sevā. Sevonmukhe hi jihvādau. And that service begins from the tongue. Now, generally, when we think of service, we think of our hand and legs, that "By..., I can render service with my hands, with my legs." No. The science of understanding God—the service begins with the tongue. Just see. Ataḥ śrī-kṛṣṇa-nāmādi na bhaved grāhyam indriyaiḥ (CC Madhya 17.136). You cannot understand what is God, what is Kṛṣṇa, His name, His activities, nāmādi... Nāmādi means name, form, qualities, activities, pastimes, entourage, so many things, ādi. Therefore... Just like we are chanting Hare Kṛṣṇa, but we cannot understand what is the meaning of Hare Kṛṣṇa. We cannot understand. Nāmādi. Na bhaved grāhyam indriyaiḥ. Indriyaiḥ means the senses. There are so many people are hearing this sound vibration, but why they're not becoming Kṛṣṇa conscious? Because there is no sevā, there is no service. Therefore it is said, ataḥ śrī-kṛṣṇa-nāmādi na bhaved grāhyam indriyaiḥ (CC Madhya 17.136). But how it will be perceived by the indriyas? Sevonmukhe hi jihvādau. By service. And wherefrom the service begins? It begins jihvādau, beginning with the tongue, beginning with the tongue. This is the service.