What is the ruling on benefiting from the stones of ancient ruins from the buildings of previous nations, which positive law prohibits removing under the pretext that they are national heritage and a source of attraction for tourists?

Such ancient stones, if found and protected by the government, become public property of the state. However, if someone discovers them before the state in land that has no owner, then that person has a greater right to them, based on the principle: "Whoever precedes to something that no Muslim has preceded him to, it belongs to him." The prohibition of positive law regarding such matters must be adhered to if it is enacted for the public good. Otherwise, it is not obligatory to adhere to it except outwardly, for fear of discord and harm.