BṚHADĀRAṆYAKA UPANISHAD · 3.7.10

यो दिक्षु तिष्ठन् दिग्भ्यो ऽन्तरो यं दिशो न विदुर् यस्य दिशः शरीरं यो दिशो ऽन्तरो यमयत्य् एष त आत्मान्तर्याम्य् अमृतः ॥

yo dikṣu tiṣṭhan digbhyo ’ntaro yaṃ diśo na vidur yasya diśaḥ śarīraṃ yo diśo ’ntaro yamayaty eṣa ta ātmāntaryāmy amṛtaḥ ॥

'He who dwells in the space (disah), and within the space, whom the space does not know, whose body the space is, and who pulls (rules) the space within, he is thy Self, the puller (ruler) within, the immortal.'

F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)