Is a husband obligated to financially support his wife and children in a high-cost European country, and is it permissible for him to take the children's money, which the government grants them, to spend it on general expenses, or should the wife invest it for them?

The wife's maintenance is obligatory upon the husband and is a fixed amount, and the wife is entitled to it even if she is wealthy. It is not permissible for the husband to spend from his wife's money except with her consent, and he must return what he took without her consent. As for the maintenance of relatives, such as children, it is a maintenance of kindness and is not a fixed amount. The father must provide for his young, poor children, and if they have money, he should spend on them from it in a reasonable manner. He may donate maintenance from his own money, just as the father is obligated to provide for a son who is unable to earn a living.