Brihadaranyaka Upanishad 4.2.1

4.2.1

— janako ha vaidehaḥ kūrcādupāvasarpannuvāca namaste'stu yājñavalkyānu māśādhīti sa hovāca yathā vai samrāṇmahāntamadhvānameṣyanrathaṃ vā nāvaṃ vā samādadītaivamevaitābhirupaniṣadbhiḥ samāhitātmāsyevaṃ vṛndāraka āḍhyaḥ sannadhītaveda uktopaniṣatka ito vimucyamānaḥ kva gamiṣyasīti nāhaṃ tadbhagavanveda yatra gamiṣyāmītyatha vai te'haṃ tadvakṣyāmi yatra gamiṣyasīti bravītu bhagavāniti

Ganaka Vaideha, descending from his throne, said: 'I bow to you, O Yâgñavalkya, teach me.'
Yâgñavalkya said: 'Your Majesty, as a man who wishes to make a long journey, would furnish himself with a chariot or a ship, thus is your mind well furnished by these Upanishads. You are honourable, and wealthy, you have learnt the Vedas and been told the Upanishads. Whither then will you go when departing hence?'
Ganaka Vaideha said: 'Sir, I do not know whither I shall go.'
Yâgñavalkya said: 'Then I shall tell you this, whither you will go.'
Ganaka Vaideha said: 'Tell it, Sir.'