The family home may be sold, alienated or encumbered by the person who has constituted the same, with the consent of his or her spouse, and with the approval of the court. However, the family home shall under no circumstances be donated as long as there are beneficiaries. In case of sale, the price or such portion thereof as may be determined by the court shall be used in acquiring property which shall be formed into a new family home. Any sum of money obtained through an encumbrance on the family home shall be used in the interest of the beneficiaries. The court shall take measures to implement the last two provisions.