Kaṭha Upaniṣad 64

64

śvo bhaviṣyanti na bhaviṣyanti veti sandihyamāna eva yeṣāṃ bhāvo bhavanaṃ tvayopanyastānāṃ bhogānāṃ te śvobhāvāḥ / kiñ ca matryasya manuṣyasyāntaka he mṛtyo, yad etat sarvendriyāṇāṃ tejas taj jarayanty apakṣayanty apsaraḥprabhṛtayo bhogā anarthāyaivate dharmavīryaprajñātejoyaśaḥprabhṛtīnāṃ kṣapayitṛtvāt / yāṃ cāpi dīrghajīvikāṃ tvaṃ ditsasi tatrāpi śṛṇu / sarvaṃ yad brahmaṇo 'pi jīvitam āyur alpam eva, kim utāsmadādidīrghajīvikā / atas tavaiva tiṣṭhantu vāhā rathādayas tathā tava nṛtyagīte ca ///1,1.26 //

Shankara’s Commentary:
Com.—Though thus tempted, Nachiketas unagitated like a large lake, said: svobhavah, enjoyments whose existence the next day is a matter of doubt; the enjoyments enumerated by you are ephemeral; again. Oh Death, they tend to the decline of the vigour of all the organs of man. These nymphs and other enjoyments only tend to harm, because they destroy virtue, strength, intellect, vigour, fame and the rest. As for the longevity that you will give me, hear me on that point. All life, even that of Brahma is, indeed, short. What need be said of our longevity. Therefore, keep the chariots, etc., for thyself alone, as also the dance and music.