To what extent is the bank and its contract legitimate, which is based on purchasing real estate and then leasing it to its owner in installments that exceed the purchase price?

This transaction is forbidden for the following reasons: 1. Lack of a genuine lease (Ijara): The lease here is not genuine; its actual purpose is for the bank to purchase the house, serving as a stratagem to conceal the sale. 2. A stratagem for usury (Inah and its reverse): The bank buys the property for an immediate price, then leases it (nominally) through installment ownership for a larger deferred price (e.g., one million seven hundred thousand becomes two and a half million). This resembles the forbidden Inah transaction. 3. Hidden Usury: The transaction resembles "Bay al-Wafa" (sale of fidelity), which the majority of scholars consider invalid. In such a transaction, a person in need sells his property on condition of reclaiming it upon repayment of the price. In reality, it is a loan with usurious interest.

The objective of this transaction is to obtain a loan with interest, as the installments paid are, in fact, usurious interest on the loan.