This depends on the account type, investment terms, and liquidity, not just the label "Islamic." Some accounts are flexible, while others have time limits, notice periods, or conditions that affect profits.
Key points
Before depositing, clearly understand: When can you withdraw?
Will you lose profits?
Is there a minimum investment amount or timeframe?
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.