The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 278

यथेह क्षुधिता बाला मातरं पर्युपासतएवँ सर्वाणि भूतान्यग्निहोत्रमुपासतइत्यग्निहोत्रमुपासत इति ॥ ५ ॥

In plain words

Just as hungry children in this world sit around their mother waiting, so do all beings wait upon the agnihotra—yes, they wait upon the agnihotra.

Close to the Sanskrit

Just as here hungry children wait upon their mother, thus all beings wait upon the agnihotra—thus they wait upon the agnihotra.