नियमितमनसामुं त्वं स्वमात्मानमात्म -न्ययमहमिति साक्षाद्विद्धि बुद्धिप्रसादात् ।जनिमरणतरङ्गापारसंसारसिन्धुंप्रतर भव कृतार्थो ब्रह्मरूपेण संस्थः ॥ १३८ ॥
In plain words
Now, with your mind steady and quiet, know this Self directly -- know for yourself, through the clarity a purified mind gives you, that this very one is 'I'. Cross this ocean of endless coming and going, this samsara with its waves of birth and death, and rest at last, complete, established as Brahman itself.
Close to the Sanskrit
With your mind thus controlled, know directly, by yourself, through the grace of a purified intellect, this very Self as 'I am this'. Cross over the shoreless ocean of samsara whose waves are birth and death; become fulfilled, abiding in the form of Brahman.