Except as otherwise provided by law, interest generated by assets owned by a government at any level, or the sale price of assets sold by it, or capital recovered by it, shall be placed in the public treasury of the given level of government.

The sale of real property or important assets by any level of government shall be done in accordance with the law. Except as otherwise provided by law, items generated by assets owned by a public agency, or surplus or waste items among the items used by that agency, may be sold at the current market price after a request to do so has been approved by a superior competent authority.