Refer to the passage below and then answer the question afterwards in the same language as the passage:

Passage: Historically, Maldives provided enormous quantities of cowry shells, an international currency of the early ages. From the 2nd century AD the islands were known as the 'Money Isles' by the Arabs.  Monetaria moneta were used for centuries as a currency in Africa, and huge amounts of Maldivian cowries were introduced into Africa by western nations during the period of slave trade. The cowry is now the symbol of the Maldives Monetary Authority.

Question: what did the arabs called the islands
Money Isles