Are banking interests previously taken impermissible (haram) or permissible (halal)? And is it permissible to give them to a poor, sick brother or a brother who wishes to marry but does not have the money?

Bank interest is usurious (riba) and forbidden (haram). It is ill-gotten wealth that must be disposed of by spending it on Muslim welfare. It is permissible to give from this money to a poor brother who is unemployed, as well as to a brother who wishes to marry but cannot afford the expenses.