Is it permissible to give the Zakat on gold to one's father if his income is low and he needs to borrow money to cover household expenses and the education of his siblings, knowing that he owns a plot of land whose income is used for the children's expenses or for preparing the daughters for marriage?

The basic principle is that it is not permissible to give Zakat to one's parents because their maintenance is obligatory upon the child. However, if the child is unable to provide for them and the parents are in need, then it is permissible to give them Zakat. Similarly, it is permissible to give Zakat to a father who is in debt to pay off his debt if he has no means to settle it, and the income from land is not considered if it is insufficient for his needs.