Is it permissible for the poor mother and sisters to take their share of the money from a house inherited from unlawful wealth after it has been sold, and is it permissible for the questioner to give them his share or part of it?

Ill-gotten wealth acquired through illicit means does not become permissible for the heirs of the deceased upon his death. It must be returned to its owner if known. Otherwise, it should be given as charity on behalf of its owner or spent on the welfare of Muslims. If the owner is unknown or cannot be found, and the heirs are poor, they are permitted to take from it according to their needs, and any surplus should be given to those who are entitled to it or spent on public welfare.

If the questioner is well-off and his mother and sisters are poor, and he is able to support them, then they are not permitted to take anything from this ill-gotten wealth. However, if he is poor or unable to support them, then they may take what suffices them from this money. The same ruling applies to the questioner himself if he is poor and in need.