What is the ruling of Islamic law regarding a wife demanding her deferred dower (mahr mu’akhkhar) after she had waived it and refused to receive it at the time of divorce, then later demands it at the current price of a gold lira?

Matters involving disputes and conflicts are referred to the Sharia (definition) judiciary, and a fatwa (definition) is not beneficial in such cases; because a fatwa might be issued based on what was heard from one of the disputing parties, while the other party may have evidence to refute the claim.

Scholars have differed on whether absolution (ibra') requires acceptance or not. The majority (Hanafi, the more authoritative view of the Shafi'i, and Hanbali schools) hold that absolution does not require acceptance. The Maliki school and another view within the Shafi'i school hold that absolution does require acceptance.

According to the view that absolution requires acceptance, the wife's absolution would not be complete due to your lack of acceptance. However, according to the other view, the absolution is complete, and the wife has no right to revoke it.

If the deferred dowry (mu'akhkhar sadaq) is established for the wife, her right is to its like (similar amount), not its value at the time it was incurred. The change in currency value is not considered, according to the preponderant opinion.