What is the inheritance status in the following cases: a plot of land purchased in installments from the state in the father's name, but the children pay most of the installments; another plot of land purchased by the children but registered in the father's name; and a house, the larger part of which was built with the children's money and registered in the father's name?

Determining what belongs to each partner in joint property—especially between a father and his children—depends on their original agreement when they participated in the purchase or construction. This should not be delayed until the death of one of them; rather, it must be established immediately to prevent disputes and preserve rights. It is not obligatory to claim the full right; rather, it is permissible to waive a portion of the right to the father if it does not harm the children.