The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 334

स यः संकल्पं ब्रह्मेत्युपास्ते संक्लृप्तान्वै स लोकान्ध्रुवान्ध्रुवः प्रतिष्ठिता-

In plain words

Whoever meditates upon resolve as Brahman—that steadfast person attains worlds that are steady, secure, and permanent, remaining unshakeable himself.

Close to the Sanskrit

He who worships resolve as Brahman, he, being steady, attains worlds that are resolved, steady, and established.