6.27 Supreme happiness, which is of the nature of experience of the self in its essential nature comes to this Yogin whose 'mind is at peace,' i.e., whose mind does not swerve from the self, whose mind abides in the self; whose impurities are thery completely burnt away; whose Rajas is thery 'wholly annulled,' i.e., in whom the ality of Rajas is destroyed; and who has thus become the Brahman, i.e., who remains steady in his essential nature as the Atman. 'Hi' (for) is added to indicate reason. The meaning is this:  'On account of the nature of the self which has the form of supreme bliss.'