Chandogya Upanishad 3.49

यद्वै तद्ब्रह्मेतीदं वाव तद्योयं बहिर्धा पुरुषादाकाशो यो वै स बहिर्धा पुरुषादाकाशः ॥ ७ ॥

3.12.7 — yadvai tadbrahmetidam vava tadyoyam bahirdha purushadakasho yo vai sa bahirdha purushadakashah || 7 ||

Verily, what Is called Brahma— that is the same as what the space outside of a person is. Verily, what the space outside of a person is — [8] that is the same as what the space within a person is. Verily, what the space within a person is — [9] that is the same as what the space here within the heart is. That is the Full, the Non-active.2 Full, non- active prosperity he obtains who knows this.

जिसे ब्रह्म कहा जाता है, वही यह है — जो पुरुष के बाहर का आकाश है; और जो पुरुष के बाहर का आकाश है —