5.17 'Those whose intellects pursue It,' i.e., those who have determined to have the vision of the self in this way; 'those whose minds think about It,' i.e., those whose minds have the self for their aim, those who undergo discipline for It, i.e., those who are devoted to the practices for Its attainment; 'those who hold It as their highest object,' i.e., those who consider It as their highest goal - such persons, having their previous impurities cleansed by the knowledge which is practised in this way, attain the self as taught. 'From that state there is no return' - the state from which there is no return means the state of the self. The meaning is that they attain the self which rests in Its own nature.