Does the divorcee deserve the remainder of the dowry if the divorce occurred before the wedding, and how many divorces are considered to have taken place if the divorce paper is unofficial and without witnesses?

Postponing the deferred dowry until the wedding does not affect the entitlement to the dowry upon divorce before it, as what matters is consummation with the wife or legal seclusion. If either of these occurs, the wife is entitled to the full stipulated dowry (400,000). The wife would then be owed 300,000 if the husband had already paid 100,000. Otherwise, if neither consummation nor seclusion occurred, then half the dowry (200,000) is due, and the husband would pay 100,000 to complete the half.

Divorce takes effect by writing if the husband intends it, and no official formality or witnessing is required. A triple divorce is considered valid by the majority of scholars, in contrast to Sheikh al-Islam Ibn Taymiyyah. The decisive authority in these matters is the Sharia (definition) courts.