Kaṭha Upaniṣad 230

230

yat tad ātmavijñānasukham anirdeśyaṃ nirdeṣṭum aśakyaṃ paramaṃ prakṛṣṭaṃ prākṛtapuruṣavāṅmanasayor agocaram api san nivṛttaiṣaṇā ye brāhmaṇās ta etat pratyakṣam eveti manyante, kathaṃ nu kena prakāreṇa tat sukham ahaṃ vijānīyām / idam ity ātmabuddhiviṣayam āpādayeyaṃ yathā nivṛttaiṣaṇā yatayaḥ / kim u tad bhāti dīpyate prakāśātmakaṃ tad yato 'smadbuddhigocaratvena vibhāti vispaṣṭaṃ dṛśyate kiṃ vā neti ///2,1.14 //

Shankara’s Commentary:
Com.—That bliss of the knowledge of the atman which is indescribable, highest and which, though beyond the speech and mind of men, under the sway of Prakriti, they, the Brahmins freed from all desire, describe as this, i.e., as something directly perceived; how; i.e., by what process shall I know that bliss: i.e., realise it as thus perceivable by my intelligence, as the sanyasins freed from desire, do? Is that which is luminous of itself an object clearly perceivable by our intelligence or not?