To what extent are the aforementioned deferred transactions valid, and how is the price determined, whether in cash or deferred? Is it permissible to change the terms of payment after they have been agreed upon? What is the ruling on determining and modifying the deferred price, differentiating the price between buyers, and increasing the price to avoid loss?
There is no objection to promising a customer to sell a commodity after possessing it, provided that the agreed-upon price is determined at the time of concluding the contract. It is not permissible to agree on two prices (cash and deferred) from which the buyer later chooses one. What has been agreed upon in the contract cannot be increased thereafter.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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