What is the ruling on the "Al-Tayseer" account at Al-Ahli Bank, which finances the customer based on their capacity, by selling a metal or iron where the customer authorizes the bank to sell and buy it, knowing that the bank sets a 7% increase before selling the commodity?

The questioner's intent is not entirely clear. However, if he means that the bank sells a metal or iron it owns to the customer at an installment price with a 7% increase, and then the customer authorizes the bank to sell it after receiving it, this is what is known as "Tawarruq," which is debated in its ruling. It must be noted that dealing with interest-based banks is not permissible, even in transactions free of usury, because it aids them in usury.