CHĀNDOGYA UPANISHAD · 2.2.3
कल्पन्ते हास्मै लोका ऊर्ध्वाश् चावृत्तश् च य एतद् एवं विद्वांल् लोकेषु पञ्चविधं सामोपास्ते ॥
kalpante hāsmai lokā ūrdhvāś cāvṛttaś ca ya etad evaṃ vidvāṃl lokeṣu pañcavidhaṃ sāmopāste ॥
The worlds in an ascending and in a descending line belong to him who knowing this meditates on the fivefold Sâman as the worlds.
F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)