Is it permissible to raise the deferred dower (mu’akhar al-sadaq) from 500 Syrian pounds to six and a half million Syrian pounds before death, and is it permissible to raise the deferred dower generally after marriage?

The deferred dowry (mu'akhkhar al-sadaq) is what was agreed upon at the time of the marriage contract. If the husband increases the deferred dowry after the contract, this increase is not considered part of the deferred dowry; rather, it is either a gift (atiyyah) or a bequest (wasiyyah). If it is a gift and the wife did not take possession of it before the husband's death, then the donee (recipient of the gift) does not own the gift except by taking possession of it. If it is a bequest, it is not permissible for an heir unless the other heirs give their permission. The increase made after the contract has the ruling of a dowry in some cases and the ruling of a gift in others. If the husband increases it after the contract, stating that it is part of the dowry, then this increase is halved if the wife is divorced before consummation, and it becomes void if the husband dies or becomes bankrupt before the wife takes possession of it. Therefore, this increase is not a debt owed by the husband, except for what was agreed upon before or during the contract, and the wife is not entitled to anything beyond the deferred dowry upon which the contract was made.