What is the share of the heirs from their deceased father's building, and how is it calculated, given that the title deed for the building is in the son's name, and the father contributed 100,000 Saudi Riyals to its construction, which cost 230,000 Saudi Riyals, and the son is preparing to demolish it and rebuild it with financing from the Real Estate Development Fund?

What the father gave to his son is either a gift, which must be returned to be divided among the heirs, or a loan, which must be repaid to be included in the inheritance, or a partnership in the building. In the case of a partnership, the father's share is divided among the heirs. If the building is demolished, and the father was unaware that it would be demolished, the son is obliged to pay the value of the father's share at the time of demolition so that it can be divided among the heirs. If the father was aware of the demolition, then his ownership was temporary, and there is nothing for the heirs after the demolition. In case of dispute, recourse should be made to the Sharia (definition) court.