गायत्रीव्याख्याThe Gāyatrī explained
Verse 217
असौ देवस्त्रिलोकात्मा त्रिगुणं व्याप्य तिष्ठति । अतो विश्वमयं ब्रह्म वाच्यं व्याहृतिभिस्त्रिभिः ॥ २१७ ॥
asau dēvastrilōkātmā triguṇaṁ vyāpya tiṣṭhati | atō viśvamayaṁ brahma vācyaṁ vyāhṛtibhistribhiḥ || 217 ||
Translation
This god is the Self of the three worlds and abides pervading the three guṇas; so Brahman, which is the whole universe, is expressed by the three vyāhṛtis.
Word by word
- asau
- this
- dēvaḥ
- (devaḥ) god
- trilōka
- of the three worlds
- ātmā
- the Self
- triguṇaṁ
- the three guṇas
- vyāpya
- pervading
- tiṣṭhati
- abides
- ataḥ
- (ataḥ) so
- viśva
- the universe
- mayaṁ
- made of
- brahma
- Brahman
- vācyaṁ
- is expressed
- vyāhṛtibhiḥ
- (vyāhṛtibhiḥ) by the vyāhṛtis
- tribhiḥ
- three
Meaning
The meaning of bhūr bhuvaḥ svaḥ. The god named by oṁ is the very being of the three worlds and pervades the three qualities of nature, sattva, rajas and tamas. So the three vyāhṛtis, which name the three worlds, name Brahman in its form as the universe (viśvamaya).

Commentary
Hariharānanda Bhāratī’s Sanskrit commentary, translated
See the commentary on verse 216.