The ruling on installment sales with an increase in the price

Question:
Among the questions that came in, this questioner says: What is the ruling on selling on installment with an increase in the price of the item?

Answer:
This is permissible. It is prescribed for the seller to increase the price of his goods if he wants to sell them on credit, and this is not riba (usury or interest), because an installment sale is not the same as a cash sale. It has been the custom of the Muslims from the time of the Prophet (peace and blessings be upon him) until this day that a sale on credit includes an increase.
So if the item is worth one hundred, he sells it for one hundred and twenty, or one hundred and thirty, or one hundred and forty, or one hundred and fifty, each according to the length of the term. If the term is short, the profit is small, and if the term is long, the profit is large. The people continued to buy and sell during his time (peace and blessings be upon him), and he did not say to them, "Do not sell except at the cash price." Yes.