। ॥ ६३१ ॥
In plain words
So the Self, whose whole nature is bliss unmixed with anything else, is called the dearest of all — dearer than any object there is. But whoever holds something other than this Self dear, whatever that something may be: from it he tastes nothing but grief.
Close to the Sanskrit
Therefore the Self, whose nature is unmixed bliss, is declared dearest of all things; but he who considers anything other than this to be dear — that very man experiences from it nothing but grief.