he has brought the remainder—does this arrangement stand, or is it necessary to renew the contract once the balance is paid?

Answer: It is preferable to redo the contract after the buyer brings the rest of the price. This causes no harm, for it is merely a repetition of the wording, while bearing in mind any rise or fall in the market price. If both parties choose to conclude the contract at the original price, there is no objection. Still, postponing the contract until the full price is present is better, because there is no need to finalize it before the payment is in hand. Allah is the One who grants success.

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Question Thirteen: Some gold-shop owners go to a gold dealer and take from him new gold—say, one kilogram—that is mixed with fuṣūṣ (gemstones), whether precious stones such as diamonds, zircon, or the like. In exchange, the purchaser gives him pure gold, weight for weight, but without any fuṣūṣ. The seller then adds an extra amount called a fabrication fee. Thus the seller acquires two surpluses: first, an excess of gold