CHĀNDOGYA UPANISHAD · 6.3.2

सेयं देवतैक्षत ।
हन्ताहम् इमास् तिस्रो देवता अनेन जीवेनात्मनानुप्रविश्य नामरूपे व्याकरवाणीति ॥

seyaṃ devataikṣata ।
hantāham imās tisro devatā anena jīvenātmanānupraviśya nāmarūpe vyākaravāṇīti ॥

'That Being (i. e. that which had produced fire, water, and earth) thought, let me now enter those three beings (fire, water, earth) with this living Self (gîva âtmâ), and let me then reveal (develop) names and forms.

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)