Chandogya Upanishad 1.8.7

1.8.7

hantāham etad (S ) vedānīti \
viddhīti hovāca \
amuṣya lokasya kā gatir iti \
ayaṃ loka iti hovāca \
asya lokasya kā gatir iti \
na pratiṣṭhāṃ lokam (S ) iti hovāca \
pratiṣṭhāṃ vayaṃ lokaṃ sāmābhisaṃsthāpayāmaḥ \
pratiṣṭhāsaṃstāvaṃ hi sāmeti \\108.7\

(Dālbhya) 'Will you permit me, sir, to learn this of you?' 'Learn', said (Śilaka). 'What is the essence of that (heavenly) world?' 'This earth', said (Śilaka). 'What is the essence of this earth?' 'One cannot carry the Sāman beyond this world as its support', said Śilaka; 'we locate the Sāman in this world as its support, for Sāman is extolled as the earth.'