What is the ruling on purchasing a housing unit from a bank that sells it in installments with usurious interest? What is the ruling on someone who has purchased a unit and completed paying its installments, and is it permissible to buy it from him? What is the ruling on someone who has purchased a unit and is still paying its installments, and can he sell it? And can the unit be purchased from him, with the buyer assuming responsibility for paying the remaining installments to the bank?

It is not permissible to purchase from the aforementioned bank due to its explicit usury. Whoever has purchased in this manner must repent and endeavor to expedite the payment of installments to eliminate the interest. The residential unit is the property of the buyer, and they are entitled to sell it. If the installments have not yet concluded and the buyer wishes to sell it on condition that the new buyer pays the remaining installments, this is not permissible if it requires opening an account with the usurious bank or committing to pay usurious interest in case of delay, unless this can be avoided by paying the installment to the seller or by delivering it manually to the bank. If the second buyer must open a usurious account or commit to usurious interest, then this is not permissible, as it constitutes an affirmation of usury and an assistance to it.