Is it permissible to distribute the estate of a person who has lost his memory or is terminally ill?

A man died and left behind two wives, five sons and a daughter, then the first wife and one of her sons died

His father and paternal uncle died, then his grandmother died. Does he inherit from her?

Can a person who is Muslim in name only be given any part of the inheritance?

He died and left behind a wife, a son and three daughters, then the wife died

She died and left behind a husband, two daughters, two sisters, a grandmother, a maternal uncle and two maternal aunts

The couple and their daughter died one after another in an accident; how should their estate and diyah be divided?

He died and left behind a wife, a mother, daughters, brothers and sisters

Withholding inheritance from a daughter so that her husband will not take it

She died and left behind a mother, two sisters and a husband