MuU 2.2.7
मनोमयः प्राणशरीरनेता प्रतिष्ठितोऽन्ने हृदयं सन्निधाय । तद् विज्ञानेन परिपश्यन्ति धीरा आनन्दरूपममृतं यद् विभाति
manomayaḥ prāṇaśarīranetā pratiṣṭhito'nne hṛdayaṃ sannidhāya | tad vijñānena paripaśyanti dhīrā ānandarūpamamṛtaṃ yad vibhāti
Sanskrit for this text is pending; the English follows the translator's numbering.
He who understands all and who knows all, he to whom all this glory in the world belongs, the Self, is placed in the ether, in the heavenly city of Brahman (the heart). He assumes the nature of mind, and becomes the guide of the body of the senses. He subsists in food, in close proximity to the heart. The wise who understand this, behold the Immortal which shines forth full of bliss.
Translated by F. Max Müller