Is it permissible to buy a house from someone who purchased it with a Riba-based loan and then pay the remaining installments to the bank, given the necessity of housing and the inability to afford the house's price?

It is permissible to purchase a house and pay the remaining installments, provided that opening an account in a usurious bank is not imposed, nor are usurious interests imposed for late payment. This can be avoided by paying the installment to the seller for him to deliver it to the bank. However, if it becomes necessary to open an account in a usurious bank or to pay usurious interests, then this is not permissible due to it being an affirmation of usury, an assistance to it, or a contamination of wealth with usurious funds. Living by rent is not a necessity that permits dealing with usurious institutions.