What is the ruling on someone who stipulated "partnership in ownership" in their marriage contract, and how can this contract be rectified given the existence of children, and what is the expiation required of them? What is the ruling on a man buying gold as a dowry for his fiancée, and what jewelry is permissible and impermissible for men and women to buy?

It is not permissible for a husband to stipulate his wife's financial participation in her wealth within the marriage contract, as this combines marriage and sale, which is forbidden. If the marriage takes place and consummation occurs, it becomes valid, and the woman is not obligated to give money based on this condition. If the wife voluntarily donates some of her wealth to her husband after the contract, while being of sound mind and mature, her gift is valid. As for specifying a certain amount of money to buy gold for the fiancée as a dowry, there is no objection to it, because gold of all types can be a valid dowry. There is no limit to the maximum dowry, but the Shari'ah encourages its reduction, based on the Prophet, peace and blessings be upon him, saying: "The most blessed marriage is that which has the least burden."