। ॥ ७०४ ॥
In plain words
As long as the meaning of the two words 'that' and 'you' is not fully examined, so long does human bondage—characterized by death and endless wandering—persist.
Close to the Sanskrit
As long as the meaning of the two words 'tat' and 'tvam' is not thoroughly investigated, so long indeed is the bondage of men characterized by death and saṃsāra.