The Īśopaniṣad teaches us, īśāvāsyam idaṁ sarvam (Īśo mantra 1); "Nothing, nothing belongs to you. Everything belongs to God. Everything belongs to God." There is a story that God laughs when two party fights for the land. Actually we have seen. In India, when there was partition day, the Hindu, Muslim, fought. Hindu, Muslim, fought, and when both of them died and lied on the street and strewn all over the street and ask them, "Now, whose land it is?" now nobody replied. Nobody replied. The God's land will remain here. And we simply fight, that "This is my land. This is my land." These are all these, I mean to say, paraphernalia of our illusion. Illusion.
So here Lord says that yadā saṁharate cāyaṁ kūrmo 'ṅgānīva sarvaśaḥ: "Just like the tortoise closes his senses according to his wish, similarly, the person who is able to use his senses according to his own control, he is to be understood that he's situated in the spiritual platform." Use of the senses is not bad, but one should use when it is needed, not according to the dictation of the senses. Not according to the dictation of the senses. You'll find here in the Bhagavad-gītā later on that God says that "Sex intercourse for generating a child is Myself." God says: "I am." But beyond that, sexual intercourse is not . . . the Lord says: "I have nothing to do with that."