The works of Ādi Śaṅkarācārya

Bṛhadāraṇyakopaniṣadbhāṣyam

Verse 278

विद्युद्ब्रह्मेत्याहुर्विदानाद्विद्युद्विद्यत्येनं पाप्मनो य एवं वेद विद्युद्ब्रह्मेति विद्युद्ध्येव ब्रह्म ॥ १ ॥

In plain words

'Lightning is Brahman,' they say — and it is called lightning because it tears the darkness open. Know it this way, and it cuts every sin loose from you. Lightning — that, truly, is Brahman.

Close to the Sanskrit

'Lightning is Brahman,' they say — [called so] from splitting open [the darkness]; it cuts this one loose from sin, he who thus knows 'Lightning is Brahman.' For lightning, indeed, is Brahman.