अथ यद्द्वितीयममृतं तद्रुद्रा उपजीवन्तीन्द्रेण मुखेन न वै देवा अश्नन्ति न पिबन्त्येतदेवामृतं दृष्ट्वा तृप्यन्ति ॥ ३.७.१ ॥
In plain words
That which is the second nectar the Rudras live upon, with Indra for their mouth. The gods do not eat or drink; they are satisfied by merely looking upon this nectar.
The commentators
Chāndogyopaniṣadbhāṣyam· bhāṣya
अथ यद्द्वितीयममृतं तद्रुद्रा उपजीवन्तीत्यादि समानम् ॥
In plain words
Now, as for the second nectar—which the Rudras live upon—the rest of the explanation proceeds identically as before.
Close to the Sanskrit
Now, what is the second nectar, that the Rudras subsist upon—thus [the text continues, and] the rest is uniform.