US-P17.005ab ।US-P17.005cd ॥
In plain words
Even a gain you seek for your own sake, wanting happiness out of it, turns out to be the opposite. The gain of the Self is the supreme gain — the knowers of Brahman have said so — because it is eternal.
Close to the Sanskrit
For even that gain which is for the sake of the self, desired for happiness, is the reverse; the gain of the Self is declared supreme by the knowers of Brahman, because of its eternality.