BṚHADĀRAṆYAKA UPANISHAD · 4.4.3

तद् यथा तृणजलायुका तृणस्यान्तं गत्वान्यम् आक्रमम् आक्रम्यात्मानम् उपसंहरति ।
एवम् एवायम् आत्मेदं शरीरं निहत्याविद्यां गमयित्वान्यम् आक्रमम् आक्रम्यात्मानम् उपसंहरति ॥

tad yathā tṛṇajalāyukā tṛṇasyāntaṃ gatvānyam ākramam ākramyātmānam upasaṃharati ।
evam evāyam ātmedaṃ śarīraṃ nihatyāvidyāṃ gamayitvānyam ākramam ākramyātmānam upasaṃharati ॥

'And as a caterpillar, after having reached the end of a blade of grass, and after having made another approach (to another blade), draws itself together towards it, thus does this Self, after having thrown off this body and dispelled all ignorance, and after making another approach (to another body), draw himself together towards it.

F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)