Is a verbal promise to sell an apartment binding, and is the other party entitled to material and moral compensation for the promisor's backing out, and how is this compensation estimated?

If what occurred was merely a promise to sell, then no sale has taken place between them. In this case, scholars differ on the obligation to fulfill the promise and execute the contract. If the father had a valid excuse, then there is no blame on him. However, if he had no excuse, then he is religiously obligated to fulfill the promise. If the promise becomes legally and religiously binding, for instance, if the father told the other party, "Sell your car and I will sell you the apartment," and the other party did so, then the father must either sell him the apartment or pay compensation for the actual damage incurred due to the promise. This damage is to be assessed by specialists.