Does the handover of an endowment (waqf) land to the Ministry of Education for the purpose of building a school require the heirs' consent, and is this considered a charitable act, given that the heirs have not agreed to hand it over on the grounds that the Ministry can afford to buy land?

If an endowment meets its conditions, it does not require the heirs' consent. However, the details regarding the aforementioned endowment are missing. Perhaps the heirs have a right to not surrender the land, or they might be acting unjustly. Therefore, a fatwa cannot be issued without details. In the event of a dispute, the matter should be referred to the Sharia court, or scholars should be consulted.