“A dhÄ«ra is one who is not disturbed by material illusion. No one can be undisturbed unless he is perfectly spiritually realized, at which time one neither hankers nor laments for anything. A dhÄ«ra realizes that the material body and mind he has acquired by chance through material association are but foreign elements; therefore he simply makes the best use of a bad bargain.”
(Śrī Īśopaniṣad 10, Purport)