Saudi currency

RIYAL

This monetary unit is named after a historical silver coin used in the Ottoman Empire and is also the currency of Qatar.

The clue "Saudi currency" directly refers to the official money used in Saudi Arabia, which is called the riyal. It’s a straightforward definition with no wordplay—just a simple fact about the country’s financial system. The answer "RIYAL" fits because it’s the standard term for both coins and banknotes there, much like how the US uses the dollar. If you’ve traveled to Saudi Arabia or dealt with its economy, this would be instantly familiar.