Is it permissible for the wife to demand a portion of the monthly salary that is disbursed in her name for her children in Canada, and which the husband seizes and sends to his family, knowing that he claims that this money was given to him by Allah and the wife has no right to it?

The reference for determining the ownership of money belongs to the donor. If it is for a child, expenses are drawn from it for the child, and the remainder is kept for them until they reach maturity and their money is handed over to them, based on the Almighty's saying: "And if you perceive in them sound judgment, then release to them their property." It is not permissible for the mother or father to take anything from it except according to the Islamic legal guidelines. The fact that the money is registered in the mother's name does not mean she has the right to dispose of it.