Bequeathing a piece of land to his deceased son's son and then another piece after a while

Q: A grandfather had two sons. After the death of one of them, he gave a piece of land to one of the sons of the deceased, but after a while he said he gave two thirds of the land to his son and the other third to his grandson (the son of the deceased). Is this permissible?

A: If the heirs permitted this action, there is no harm in carrying out the will. However, if the heirs or some of them oppose the will, they should resort to the Shari`ah (Islamic law) court. On the other hand, the portion of the minor should remain unchanged. (Part No. 16; Page No. 315) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.