Collecting donations to give gifts to poor families at Christmas

Is it permissible for the father to sell his property to one of his sons and not the other?

Can perfume be given as a gift to a woman who will go out wearing it in the street?

Can the mother give a large part of her wealth to one of her daughters who is going to get married?

Giving the representative money to buy from him

If he lets one of his sons live in an apartment for free, is he obliged to treat the rest of his sons equally?

Her relative works in a haram job and gave her some money as a gift

He has been given money to help him get married – should he accept it?

Teacher accepting a gift from the students

He gave her gifts to marry him; can he ask for the gifts to be returned if she refuses to marry him?