Verse 796: When duty is done

796. When duty is done

ஆறுகடந் தோன்படகைத் தோளிற் சுமப்பதென்னதீர்ந்தகடன் தீரா தெனல்

aarukadan thonpadakaidh tholir sumappadhennatheerndakadan theeraa thenal

He has crossed the river and still carries the boat on his shoulder: that is calling a settled debt unsettled.
Kadan means both debt and duty: money already repaid, or a duty already done.