What is the religious ruling on a husband's refusal to have a third child, and what should the wife do about it, given that she desires to have children and he does not?

Procreation is a shared right between spouses; it is not permissible for one to prevent the other from it without a valid excuse. Therefore, the wife is entitled to demand procreation, and the husband does not have the right to prevent her from it for the reasons mentioned. However, it is permissible to agree by mutual consent to postpone it for a need or benefit.