BṚHADĀRAṆYAKA UPANISHAD · 3.7.23

यो रेतसि तिष्ठं रेतसो ऽन्तरो यं रेतो न वेद यस्य रेतः शरीरं यो रेतो ऽन्तरो यमयत्य् एष त आत्मान्तर्याम्य् अमृतः ।
अदृष्टो द्रष्टाश्रुतः श्रोतामतो मन्ताविज्ञतो विज्ञाता ।
नान्यो ऽतो ऽस्ति द्रष्टा नान्यो ऽतो ऽस्ति श्रोता नान्यो ऽतो ऽस्ति मन्ता नान्यो ऽतो ऽस्ति विज्ञाता ।
एष त आत्मान्तर्याम्य् अमृतः ।
अतो ऽन्यद् आर्तम् ।
ततो होद्दालक आरुणिर् उपरराम ॥

yo retasi tiṣṭhaṃ retaso ’ntaro yaṃ reto na veda yasya retaḥ śarīraṃ yo reto ’ntaro yamayaty eṣa ta ātmāntaryāmy amṛtaḥ ।
adṛṣṭo draṣṭāśrutaḥ śrotāmato mantāvijñato vijñātā ।
nānyo ’to ’sti draṣṭā nānyo ’to ’sti śrotā nānyo ’to ’sti mantā nānyo ’to ’sti vijñātā ।
eṣa ta ātmāntaryāmy amṛtaḥ ।
ato ’nyad ārtam ।
tato hoddālaka āruṇir upararāma ॥

'He who dwells in the seed, and within the seed, whom the seed does not know, whose body the seed is, and who pulls (rules) the seed within, he is thy Self, the puller (ruler) within, the immortal; unseen, but seeing; unheard, but hearing; unperceived, but perceiving; unknown, but knowing. There is no other seer but he, there is no other hearer but he, there is no other perceiver but he, there is no other knower but he. This is thy Self, the ruler within, the immortal. Everything else is of evil.' After that Uddâlaka Âruni held his peace.

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