What is the ruling on purchasing a car through long-term installments from the usurious "Arab Bank" in Palestine, knowing that its offers are less expensive than those of Islamic banks, and that a low-income employee cannot afford to buy in cash?

It is permissible to deal with a usurious bank if it truly purchases the commodity and it enters into its possession, then sells it to the customer at a fixed price without stipulating an increase in case of delayed payment. This is analogous to the Prophet (peace be upon him) and his Companions dealing with the Jews, who consumed usury. However, dealing with institutions that do not engage in usury is better.