Yes: Don't assume that having an Islamic or currency account guarantees you access to foreign currency in any amount.
Key points
Purchasing currency for travel is subject to the rules, availability, and limits set by the central bank and your bank at the time of the request.
Before traveling, check the required documents, limits, and exchange rates, and have an alternative payment method.
The figures, fees and limits in this answer vary by bank and change over time — confirm them with your bank or the official source before acting.