KAṬHA UPANISHAD · 1.1.6

अनुपश्य यथा पूर्वे प्रतिपश्य तथाऽपरे ।
सस्यमिव मर्त्यः पच्यते सस्यमिवाजायते पुनः ॥ ६॥

anupaśya yathā pūrve pratipaśya tathā’pare ।
sasyamiva martyaḥ pacyate sasyamivājāyate punaḥ ॥ 6॥

“Look back and see, even as were the men of old, — look round! — even so are they that have come after. Mortal man withers like the fruits of the field and like the fruits of the field he is born again.”