Harih, Om. He who knows the first and the best, becomes himself the first and the best among his people. Breath is indeed the first and the best. He who knows this, becomes the first and the best among his people, and among whomsoever he wishes to be so.

In plain words: Breath is the first and best of the powers in the body. Whoever understands this becomes first and best among his people, and among whomever he chooses.