What is the ruling on an account opened by a bank where the principal amount is withheld, and the customer enters a monthly draw for prizes from the bank, and the bank gives the customer annual profits (interest), knowing that they say it contains no interest or profits, and that it is an Islamic bank according to the testimony of the country's scholars? Is it permissible to deposit money in it, and are its profits, whether monthly or annual, permissible?

Opening a savings or investment account in a bank where money is deposited and the owner receives a percentage of the profit is considered a Mudarabah (profit-sharing partnership). The draws conducted by the bank on customer accounts to win incentive prizes fall under the category of a worker's gift to the employer, and scholars have differed on its permissibility. Some view it as impermissible unless there is another reason for the gift besides the Mudarabah. However, many contemporary scholars have allowed banks to offer prizes to investment account holders under certain conditions: that granting the prizes does not lead to guaranteeing the principal of the Mudarabah, and that these prizes are paid from the bank's own funds, not from the profits of the investment accounts. It is more cautious to avoid this, especially if the purpose of opening the account is to enter the prize draw, as it may fall under the ruling of gambling.