As the one sun, the giver of light, lights up, makes manifest, this whole world: so the field-knower, the supreme Self, being one, lights up the whole field, from the great elements down to steadiness. The simile of the sun here serves two purposes for the Self: as the sun is one in all fields, so is the Self one in all fields; and as the sun is unstained, so is the Self unstained. This verse is begun to round off the matter of the whole chapter.
Contemporary English rendering of the Sanskrit bhāṣya, pending scholar review.