तत्त्वम्पदाभ्यामभिधीयमानयो -र्ब्रह्मात्मनोः शोधितयोर्यदित्थम् ।श्रुत्या तयोस्तत्त्वमसीति सम्य -गेकत्वमेव प्रतिपाद्यते मुहुः ॥ २४३ ॥
In plain words
Brahman and the deepest Self are named by two small words — 'That' and 'you.' Strip both words of what doesn't truly belong to them, and scripture, in that one sentence 'That thou art,' says the same thing again and again: they are one.
Close to the Sanskrit
Of Brahman and the Self, denoted by the two words 'tat' and 'tvam', which are thus [each] purified — of these two, the Śruti, through [the sentence] 'tattvam asi', teaches, again and again, precisely and fully their oneness.