In the concluding part of the verse the Brihadaranyaka Upanishad describes the return journey. "Upon reaching the moon, they become food. There the gods enjoy them, just as the priests enjoy the drink of Soma watching the moon wax and wane. When that ends they enter into space, from space into air, from air into rain, from rain into the earth. Then they are again offered in the fire of man, and from there into the fire of a woman so that they can go again to the other worlds. Thus, they keep rotating." When the souls fall down upon earth, they enter the plants through water. Some of the plants are consumed by animals. When both the plants and animals are consumed by men, they become part of their semen. This is explained in the Chandogya Upanishad (5.10.5-7): "There upon, exhausting the wealth of their karmas, they return again, by the same path by which they go, to space, and from space to air. Having become air, they become smoke; and having become smoke, they become mist. Having become mist, they become clouds, having become clouds, they rain down. Then they are born as rice plants and corn plants, as herbs and trees, as sesame and bean plants. From here on their escape becomes difficult. For whoever person may eat the food, and begets offspring, he henceforth becomes like unto him. Those whose conduct was pleasant will attain pleasant wombs, such as the wombs of Brahmanas, Kshatriyas, or Vaisyas; and those whose behavior was evil, will attain the wombs of the evil and the impure ones."