Krishna offers a striking analogy. Space is everywhere — in dust, in mud, in perfume, in smoke. Yet space itself is never dirtied by any of these. It remains exactly what it is, no matter what passes through it.
The Self is like that. It pervades the entire body — present in every limb, every thought, every sensation. Yet the body's actions, its joys and pains, do not stain the Self. Once this is understood, a great weight lifts. The Self was never damaged. It was never corrupted. It has always been pure.