The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 245

तस्मिन्नेतस्मिन्नग्नौ देवाः सोमं रा-जानं जुह्वति तस्या आहुतेर्वर्षं सं-भवति ॥ २ ॥

In plain words

Into this very fire the gods offer King Soma as an oblation, and from that offering rain is born.

Close to the Sanskrit

In this very fire the gods offer King Soma; from that oblation rain arises.