What is the ruling on installment sales for a deferred period, with an increase in the price of the goods compared to a cash sale?

Question:
What is the ruling on installment sales for a deferred period, with an increase in the price of the goods compared to a cash sale?

Answer:
There is nothing wrong with that. Selling for a deferred period at a price higher than the cash price is permissible, whether this deferred period is a single term or divided into installments; all of this is permissible, and praise be to Allah. Allah the Exalted said: This includes the debt that is the price of goods. Also, the Prophet (peace and blessings be upon him) bought food for a deferred price and pledged his armor for it, and he died while his armor was still pledged for it, peace and blessings be upon him.
Also, Allah the Exalted permitted salam, which is permissible by the consensus of the Muslims. Salam is paying the price in advance and deferring the delivery of the goods, whether the price is the deferred item or the goods are the deferred item; all of this is permissible. The default in transactions, and praise be to Allah, is permissibility and lawfulness, except for what evidence indicates is forbidden. Yes.