Chapter 14: The Three Modes of Material Nature
sattvam rajas tama iti
dehe dehinam avyayam
sattvam—mode of goodness; rajaḥ—mode of passion; tamaḥ—mode of ignorance; iti—thus; guṇāḥ—qualities; prakṛti—material nature; sambhavāḥ—produced of; nibadhnanti—does condition; mahā-bāho—O mighty-armed one; dehe—in this body; dehinam—the living entity; avyayam—eternal.
Material nature consists of the three modes-goodness, passion and ignorance. When the living entity comes in contact with nature, he becomes conditioned by these modes.
The living entity, because he is transcendental, has nothing to do with this material nature. Still, because he has become conditioned by the material world, he is acting under the spell of the three modes of material nature. Because living entities have different kinds of bodies, in terms of the different aspects of nature, they are induced to act according to that nature. This is the cause of the varieties of happiness and distress.