He Had It In Writing

Whatever the little thief says, he broke the contract!
Dís was fuming.
Thorin was fuming much more, of course. He was angry and he had every right to be angry.
It was clearly stated…
The Arkenstone had much bigger value than one fifteenth of the treasure!
It was all about the Arkenstone.
And the thief stole it.
There was nothing about the date of payment (why, all the business was far from concluded)! Nor anything about choosing the manner of payment.
Oh, the burglar got lucky.
He broke the contract…
And still, he was let go.
To live in shame.