Is it permissible for the mother's father to change the ownership of the land after his daughter's death? Is this considered a seized gift or not? Do the siblings have a greater right to it? Is the mother's will valid, or do the heirs have their rightful claim?

Summary of the Answer:

If a grandfather gifted land to his daughters, and they took possession and disposed of it, the gift is valid. A father may revoke a gift to his child unless the child has disposed of it. However, if possession was not taken, the grandfather may revoke the gift according to the majority of scholars.

If the grandfather developed dementia or memory loss after revoking the gift, his property may not be disposed of except for his benefit and under the supervision of a judge.

If the mother's ownership of the land is proven, her share passes to her heirs by inheritance, and her will to her son and daughter is not enforceable unless all heirs agree. The mother's will regarding her two sisters' shares is not valid.

If the grandfather's gift was unfair to his other children, he must act equitably, or the heirs must include the gift in the estate and divide it justly.