Funny I thought Muslims did not allow interest.
I've heard about all the hoops they jump through to pretend that the financial arrangement they use to get money from a bank to buy a house isn't a mortgage with interest. I suppose that if it is complicated enough, Allah's accountants won't be able to figure it out and it isn't a sin. < /sarcasm>
They often get around it through wordplay; they'll pay interest but call it a "fee" or "rent", etc. That's how it works for some banks in Britain, anyway, which was the first Western country to really institute "Islamic" banking.