What is the ruling of the Sharia regarding a divorced wife's refusal to accept the deferred dower (sadaq) agreed upon in the contract, and her demand to change its value, and what are the consequences thereof?

The deferred mahr (dowry) is a debt that must be paid with the same specifications originally agreed upon. If it was stipulated in an existing currency, it must be paid in that currency, even if its value has decreased, because a decrease in value is not considered as long as the currency is in circulation. If the currency is abolished, then its value on the day of abolition is due. No consideration is given to the wife being harmed by a decrease in the currency's value or the husband being harmed by its increase. The husband's consideration of currency fluctuations is a matter of good conduct (husn al-qadaa'), not an obligation.