The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 290

यद्विद्युतो रोहितं रूपं तेजसस्तद्रूपंयच्छुक्लं तदपां यत्कृष्णं तदन्नस्यापागा-द्विद्युतो विद्युत्त्वं वाचारम्भणं विकारो

In plain words

Whatever red form lightning wears belongs to fire; whatever white belongs to water; whatever dark belongs to earth. The very idea of lightning has fallen away from lightning. Name and transformation are merely spoken words...

Close to the Sanskrit

Whatever is the red form of lightning, that is the form of fire; what is white, that is of water; what is black, that is of food. Lightning-hood has departed from lightning. Speech-originated is the modification...