स होवाच यदूर्ध्वं गार्गि दिवो यदवाक्पृथिव्या यदन्तरा द्यावापृथिवी इमे यद्भूतं च भवच्च भविष्यच्चेत्याचक्षत आकाशे तदोतं च प्रोतं चेति ॥बृह. ३,८.४ ॥
In plain words
He said, "Gārgī, that which is above the sky and below the earth, that which is between the sky and the earth, and that which men call what has been, what is and what shall be — that is woven, warp and woof, upon space."
The commentators
Bṛhadāraṇyakopaniṣadbhāṣyam· Leaf 9.108· bhāṣya
स होवाच इतरः— हे गार्गि, यत् त्वयोक्तम् ‘ऊर्ध्वं दिवः’ इत्यादि, तत्सर्वम्— यत्सूत्रमाचक्षते— तत् सूत्रम्,
In plain words
Yājñavalkya answered her. Gārgī, he said, everything you just described — 'above the sky' and all the rest — that is exactly what the old teachers call the thread. That is the thread.
Close to the Sanskrit
He, the other one, said: O Gārgī, that which was said by you — 'above heaven' and so on — all that, which they call the thread, that is the thread.
Bṛhadāraṇyakopaniṣadbhāṣyam· Leaf 9.109· bhāṣya
आकाशे तत् ओतं च प्रोतं च- यदेतत् व्याकृतं सूत्रात्मकं जगत् अव्याकृताकाशे, अप्स्विब पृथिवीधातुः, त्रिष्वपि कालेषु वर्तते उत्पत्तौ स्थितौ लये च ॥
In plain words
That world is woven through space, crosswise and lengthwise. This visible world, threaded together the way it is, rests inside the unmanifest ether the way earthy silt rests suspended in water — and it stays that way through all three times: when it arises, while it lasts, and when it dissolves.
Close to the Sanskrit
In the ether, that is woven crosswise and lengthwise — that is, this manifest, thread-natured world exists in the unmanifest ether the way the earth-element exists in water, in all three times: at origination, at continuance, and at dissolution.