Bequeathing to grandchildren

Q 1: Someone applied to confirm the bequest of his father in a legal document as it was not registered. This bequest contains a request to give his unmarried sons twenty thousand Riyals of his property in order to support them in their marriage as he did with their brothers and sisters who are already married. We would like to know the following, may Allah protect you:Is this a legally valid bequest or not? Or is it considered to be a bequest for an heir? What is the ruling if the heirs permit this bequest? May Allah protect you and reward you well! May peace and blessings of Allah be upon you!

A: There is no harm in carrying out the bequest of the testator if the sons for whom the bequest was made were competent to marry before the death of their father. This bequest should be executed from the estate in order to achieve justice among his sons. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.