There are so many varieties of life. So those who are associating with tamo-guṇa, drinking, flesh eating, smoking, illicit sex, gambling... These are the association of tamo-guṇa. Yatra pāpāś catur-vidhā. Where there are four kinds of sinful activities. So intoxication is sinful activities. That is tamo-guṇa. Associating with tamo-guṇa. So jaghanya-guṇa-vṛtti-sthā adho gacchanti tāmasāḥ. Those who are associating with tamo-guṇa, their vṛtti, their habits, are very abominable. Jaghanya. Therefore adho gacchanti. They go downwards.
In this way, everyone is enjoying a particular type of rasa, material rasa... and nature is offering him a particular type of body. Deha-yogena dehinam. We can enjoy a particular type of rasa... Just like the hogs. They are relishing the rasa of stool very nicely. You give them nice food, they'll not take. They'll prefer to taste the stool. Why? Because he has been offered a particular type of body. And this particular type of body has been offered to him, kāraṇaṁ guṇa-saṅgaḥ asya... He has associated with jaghanya, tamo-guṇa, abominable tamo-guṇa. Therefore he has developed a body of a hog, and tasting the juice of stool. This is the way of transmigration of the soul. Actually, it is the living spirit soul, either hog or dog or a brāhmaṇa or a caṇḍāla or a cow. This is simply a covering, or... Just like we cover ourself in dream. That is subtle covering. Similarly, this is also covering. In the Vedas it is said, asaṅgo hy ayaṁ puruṣaḥ. Actually, the living entity, the spirit soul, is neither hog, neither dog, nor brāhmaṇa, nor this, nor that. It is simply a covering. But this covering is developed by our association with the particular type of modes of nature.