यथा सोम्यैकेन लोहमणिना सर्वं लोहमयं विज्ञातं स्याद्वाचारम्भणं विकारो नामधेयं लोहमित्येव सत्यम् ॥ ६.१.५ ॥
In plain words
just as, my dear, by one nugget of copper everything made of copper is known — the change is a matter of words only, a name, while the truth is that it is copper;
The commentators
Chāndogyopaniṣadbhāṣyam· bhāṣya
यथा सोम्य एकेन लोहमणिना सुवर्णपिण्डेन सर्वमन्य- द्विकारजातं कटकमुकुटकेयूरादि विज्ञातं स्यात् । वाचार- म्भणमित्यादि समानम् ॥
In plain words
Just as, dear one, by knowing a single lump of gold, all other modifications such as bracelets, crowns, and armlets are known. The rest follows the same explanation as before.
Close to the Sanskrit
Just as, dear one, by a single iron nugget [gold nugget], every other modification-group such as bracelets, crowns, armlets would be known. 'Vācārambhaṇam' and so forth is the same.