Is a husband obliged to spend on his wife’s Hajj?

He gave his wife money to do Hajj then he died; is it permissible for her to use it for something other than Hajj?

Is a brother obliged to spend on his sister?

Spending on relatives

He gives his family money to buy luxuries and borrows from his wife

What is the maximum extent of the obligation to spend on one’s children?

Is the husband obliged to rent accommodation for his son who is in the custody of his ex-wife?

Does a son have to spend on his father even if he is rich?

Is spending on a defiantly disobedient wife obligatory if she is pregnant?

Is it obligatory for the husband to provide medical treatment for his wife?