US-P14.020ab द्रष्टृ श्रोतृ तथा मन्तृ विज्ञात्रेव तदक्षरम् ।US-P14.020cd द्रष्ट्राद्यन्यन् न तद् यस्मात् तस्माद् द्रष्टाहमक्षरम् ॥
In plain words
The imperishable is what sees, what hears, what thinks, what knows — that alone and nothing else. And since it is not something other than the seer and the rest, then I, the seer, am the imperishable.
Close to the Sanskrit
That imperishable is the seer, the hearer, likewise the thinker, the knower alone. Since that is not other than the seer and the rest, therefore I, the seer, am the imperishable.