Devibhagavatapurana 7.36.10

7.36.10

manomayaḥ prāṇaśarīranetā pratiṣṭhito'nne hṛdayaṃ sannidhāya |
tadvijñānena paripaśyanti dhīrā ānandarūpamamṛtaṃ yadvibhāti ||

He who is All-Wise, and All-Knowing, whose Greatness is thus manifested in the worlds, is to be meditated upon as the Âtman residing in the Ether, in the Fourth Dimensional Space, in the shining city of Brahman (the Heart). He is the Controller of the mind and the Guide of the senses and the body. He abides in the dense body, controlling the heart. He, the Âtman, when manifesting Himself as the Blissful and Immortal, is seen by the wise through the purity of the heart.