The ruling on selling on installment with an increase over the price

Question:
May Allah reward you. Yes, Honorable Shaykh, a man has cars that he placed in a showroom, yes. A man. A man has cars and placed them in a showroom to sell them on installment, and I am going to buy from the cars in the showroom on installment. I will pay him fifteen thousand riyals, which is an increase over their original price of thirty-five thousand riyals, so that the total becomes fifty thousand. What is the ruling on this method?

Answer:
Yes, what is the issue? Buying on a deferred basis with an increase over the current price is permissible, because people do not sell on a deferred basis without an increase, and if there were no increase, they would not sell on a deferred basis, which would cause harm to people who have nothing. So, selling on installment and selling on a deferred basis is a concession for people, so there is nothing wrong with it, if Allah wills. But the increase should not be exorbitant; the increase should be within reasonable limits, not exorbitant to this extent. It is disliked for the increase to be exorbitant, and for one to take advantage of a poor person's need, where the seller increases the price by a large amount. This involves harming the Muslim, so it is disliked. But the original sale is permissible, yes.