यो दिवि तिष्ठन् दिवोऽन्तरो यं द्यौर्न वेद यस्य द्यौः शरीरं यो दिवमन्तरो यमयत्येष त आत्मान्तर्याम्यमृतः ॥३,७.८ ॥
In plain words
He who dwells in the sky, yet is within the sky, whom the sky does not know, whose body the sky is, who from within controls the sky — he is thy Self, the inner controller, the immortal.