The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Bhashya

Bhashya

अथ ह उवाच उद्दालकमित्यादि समानम् ।पृथिवीमेव भगवो राजन्निति ह उवाच ।एष वै प्रतिष्ठा पादौ वैश्वानरस्य ।पादौ ते व्यम्लास्येतां विम्लानावभविष्यतां श्लथीभूतौ यन्मां नागमिष्य इति ॥

In plain words

Then he said, beginning with 'Uddālaka', the rest is identical: 'The earth indeed, revered sir, O king,' he said. This verily is the foundation, the feet of Vaiśvānara. Your two feet would have withered away, becoming shriveled and limp, had you not come to me.

Close to the Sanskrit

Then he said 'Uddālaka' and so on is similar. 'The earth indeed, revered sir, O king,' he said. This verily is the foundation, the two feet of Vaiśvānara. 'Your two feet would have withered away, would have become withered, become loose, if you had not come to me.'