। ॥ ८६२ ॥
In plain words
So drop every other undertaking. The seeker whose one aim is to stand firm in knowledge should abide always in the Self — unshaken, with That alone as his refuge.
Close to the Sanskrit
Therefore, having abandoned other action, the ascetic wholly given to steadfastness in knowledge should remain always by steadfastness in the Self, unmoving, having That as his supreme resort.