What is the ruling on buying goods from a store that offers interest-free loans through the approval of an interest-based bank that gives the money to the store, not to the customer?

The transaction is based on the bank buying the goods at a discount from the merchant, then selling them to the customer in installments with a profit. This is called Murabaha for the one who commands the purchase, and it has specific conditions. It is also possible for the bank to lend the customer the price of the goods as a benevolent loan (qard hasan) and take a commission from the merchant, and this is permissible.

It is not permissible to engage in either of the two scenarios if the bank imposes interest on the customer for overdue amounts, as this is usury (riba). It is not permissible to deal with usurious banks except in cases of dire necessity, unless the bank has an independent branch for Islamic transactions and a Sharia supervisory board.