Maitri (Maitrāyaṇīya) Upaniṣad 1.7

1.7

atha kimetairvānyānāṃ śoṣaṇaṃ mahārṇavānāṃ śikhariṇāṃ (kimetairvārṇyānāṃ) prapatanaṃ dhruvasya pracalanaṃ (vraścanaṃ vātarajjūnāṃ) (sthānaṃ vā tarūṇāṃ) nimajjanaṃ pṛthivyāḥ sthānādapasaraṇaṃ surāṇaṃ so'hamityetadvidhe'sminsaṃsāre kiṃ kāmopabhogairyairevāśritasyāsakṛdihāvartanaṃ dṛśyata ityuddhartumarhasītyandhodapānastho bheka ivāhamasminsaṃsāre bhagavaṃstvaṃ no gatistvaṃ no gatiḥ ||

But, indeed, what of these? Among other things, there is the drying up of great oceans, the falling away of mountain peaks, the deviation of the fixed pole-star, the cutting of the wind-cords [of the stars], the submergence of the earth, the retreat of the celestials from their station.

In this sort of cycle of existence (_saṃsāra_) what is the good of enjoyment of desires, when after a man has fed on them there is seen repeatedly his return here to earth? Be pleased to deliver me. In this cycle of existence I am like a frog in a waterless well. Sir, you are our way of escape—yea, you are our way of escape!’