Verse 4

अनारतविवेकेन तेन सद्यः सनातनम् ।पुनः कलङ्कं नैवाप्तमम्बरेणेव राजसम्

In plain words

He, of unceasing viveka, swiftly attained the eternal; and never again did he incur a stain, just as the sky incurs no stain of dust.