या वै सा गायत्रीयं वाव सा येयं पृथिव्यस्यां हीदं सर्वं भूतं प्रतिष्ठितमेतामेव नातिशीयते ॥ ३.१२.२ ॥
In plain words
That Gāyatrī is this earth, for upon it all this that exists rests, and it does not go beyond this.
या वै सा गायत्रीयं वाव सा येयं पृथिव्यस्यां हीदं सर्वं भूतं प्रतिष्ठितमेतामेव नातिशीयते ॥ ३.१२.२ ॥
That Gāyatrī is this earth, for upon it all this that exists rests, and it does not go beyond this.