Verse 54

एकरूपस्थिरं चक्रं स्वच्छं संतापवर्जितम् ।नेह संप्राप्यते किंचिदग्नौ हिमकणो यथा

In plain words

A wheel steady in a single form, clear, and free of all burning — nothing of that kind is to be found here, any more than a snowflake could be found surviving in fire.