Brihadaranyaka Upanishad 3.7
intermediate
स होवाच। यद्ऊर्ध्वं गार्गि दिवो यदवाक्पृथिव्या यदन्तरा द्यावापृथिवी इमे यद्भूतं च भवच्च भविष्यच्चेत्याचक्षत आकाशे तदोतं च प्रोतं चेति॥
sa hovāca | yadūrdhvaṃ gārgi divo yadavākpṛthivyā yadantarā dyāvāpṛthivī ime yadbhūtaṃ ca bhavacca bhaviṣyaccеtyācakṣata ākāśе tadotaṃ ca protaṃ ceti ||
"He said: "That which is above the sky, below the earth, between heaven and earth, that which is called past, present, and future - that is woven on space (akasha).""
What This Means:
Yajnavalkya answers: All of space and time is woven on akasha (space/ether - the subtle element).
Going Deeper:
Akasha here is the unmanifest substrate of all manifest space-time. But Gargi will ask further.
How To Apply This:
All manifest reality rests on the subtle space. Akasha is the ground of the physical.
#akasha#space#ground of manifest