Is it permissible for a woman to give up her entire inheritance to one of her brothers and his children during her lifetime? Is she sinful if she does so? And what should the one to whom she relinquished it do if her action is not permissible?

A woman's relinquishment of her share of inheritance to one of her brothers is considered a gift (hibah), and it becomes binding if she gifts it during a non-life-threatening illness and he takes possession of it during her lifetime. However, if it was given during a life-threatening illness, or if he did not take possession of it until after her death or illness, then the gift is not valid, and the inheritance is divided among all her heirs.

A claim of gifting must be supported by evidence or the heirs' acknowledgement. She is permitted to give a gift to one of her brothers without giving to the others, and she is not obligated to treat them equally, as equality is only required among one's children.