Surrender to Krishna is humanity's natural return home, instantly transcending the illusion that binds us.Listen — Srila Prabhupada Uvaca
Prabhupāda: Balaṃ balavatāṃ... balaṃ balavatāṃ cāhaṃ kāma-rāga-vivarjitam dharmāviruddho bhūteṣu kāmo 'smi bharatarṣabha [Bg 7.11] [I am the strength of the strong, devoid of passion and desire. I am sex life which is not contrary to religious principles, O Lord of the Bhāratas [Arjuna]] Now, this particular verse we are discussing last day, that lust, or sex desire, on the principles of religiosity is Kṛṣṇa. This point we have discussed very elaborately, you may remember, that so far necessities of this body are concerned, that is allowed, but in a regulated form. The necessities of this body are four: we must eat something; we must have rest, sleep for some time; we must defend ourself from the attack of enemies; and we, er, we must have the facility for sex life also.
These things are necessary for keeping up this body. But one who is going to liberate himself from this material entanglement, he cannot use this excessively. There must be regulated. Just like a diseased person, he is put under regulation.
He is also given to eat something. Although eating is not very good for a diseased person, still, he is allowed to eat something, some barley water, some fruit juice, some light food, so that... Starvation is also not good, so he is allowed. But he cannot be allowed foodstuff according to the patient's desire.
The foodstuff is allowed to him according to the direction of the physician. So if we want to be conversant, well-equipped, with Kṛṣṇa consciousness, then we have to regulate our life. That regulation, that regulation is given in various scriptures, and here also Lord Kṛṣṇa says. He is describing Himself, how you can remember Him in every circumstances of your life. So similarly, sex life is also a necessity, a necessity for our life.
Therefore Kṛṣṇa says, "Yes, I am also in sex life, provided it is," I mean to say, "carried according to the scriptural injunction." What is that scriptural injunction? That one must get himself married; otherwise, sex life is not allowed. It is considered sinful. Married life sex life is allowed. Kṛṣṇa says that dharma-aviruddhaḥ.
Aviruddhaḥ means not against religious principle. The religious principle is putrārthe kriyate bhāryā putra-piṇòa-prayojanam. According to Vedic literature, one should marry just to have a child, putra. Putra means son.
The derivative meaning of putra is pun-nāmno narakād yasmāt trāyate iti putraḥ. For our sinful reaction we have to visit some hell, which is known as pun. So it is prescribed in the Hindu scripture that the child, when the father dies, the boy has to perform several ceremonies, which is called śrāddha ceremony, so that if the father for his sinful acts is in trouble in his next life, this ceremony will protect him. These are the some of the thoughts.