इत्थमन्योन्यतादात्म्यप्रतिपत्तिर्यदा भवेत् ।अब्रह्मत्वं त्वमर्थस्य व्यावर्तेत तदैव हि ॥ ४० ॥
In plain words
When such direct realization of mutual identity dawns, the sense of being other than Brahman, clinging to the individual self, is instantly dispelled.
Close to the Sanskrit
When thus the realization of mutual identity takes place, then indeed the non-Brahmanhood of the meaning of Tvam is dispelled.