My father has 13 children and has endowed the land to be a mosque, while we have a need for it. Is it permissible to revoke the endowment?

Question:
He says: Honorable Shaykh, may Allah grant you success. He says: My father has a piece of land, which is all he has, and he has thirteen children. He has endowed this land to be a mosque, and we need this land. Is it permissible for my father to do this? And is he allowed to revoke this endowment, or part of it? The hadith of Ka'b ibn Malik regarding his repentance has confused us, when he said that he would divest himself of all his wealth, so the Prophet (peace and blessings be upon him) forbade him. What is the ruling in this matter for us and for the father?

Answer:
This is an endowment, and the matter has been referred to the judge for a ruling. He should go to the judge and ask him about this. Yes.