The works of Ādi Śaṅkarācārya

Bṛhadāraṇyakopaniṣadbhāṣyam

Verse 232

सलिल एको द्रष्टाद्वैतो भवत्येष ब्रह्म-लोकः सम्राडिति हैनमनुशशास याज्ञ-वल्क्य एषास्य परमा गतिरेषास्य परमासंपदेषोऽस्य परमो लोक एषोऽस्य परमआनन्द एतस्यैवानन्दस्यान्यानि भूतानिमात्रामुपजीवन्ति ॥ ३२ ॥

In plain words

"He becomes one, a seer with no second beside him -- like a single expanse of water. This is the world that is brahman itself, your majesty." So Yājñavalkya taught him. "This is his highest goal. This is his highest wealth. This is his highest world. This is his highest bliss. Every other creature alive is living on nothing more than a fragment of this very bliss."

Close to the Sanskrit

"[He becomes] one, a seer without a second: water. This is the world of brahman, O sovereign" -- thus did Yājñavalkya instruct him. "This is his supreme goal, this is his supreme wealth, this is his supreme world, this is his supreme bliss; on a mere portion of this very bliss other creatures live."