BṚHADĀRAṆYAKA UPANISHAD · 1.5.19
दिवश् चैनम् आदित्याच् च दैवं मन आविशति ।
तद् वै दैवं मनो येनानन्द्य् एव भवत्य् अथो न शोचति ॥
divaś cainam ādityāc ca daivaṃ mana āviśati ।
tad vai daivaṃ mano yenānandy eva bhavaty atho na śocati ॥
From heaven and the sun, divine mind enters into him. And verily that is divine mind whereby he becomes joyful, and grieves no more.
F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)