“ Article Thirteen The Head of State, upon the advice of the Council of the Realm, may propose to the Cortes that there be excluded from the succession those royal persons lacking the necessary capacity to rule or who, because of their notorious departure from the fundamental principles of the State or because of their acts, deserve to lose the rights of succession established in this Law. ”

“ The same oath must be taken by the successor after reaching the age of thirty years.
Article Ten The Fundamental Laws of the nation are: the Fuero de los Españoles (Statute Law of the Spanish People) , the Labour Law, the Constitutive Law of the Cortes, the present Law of Succession, the Law of the National Referendum and any other which may be promulgated in teh future in this category. ”

“ II. In the event that the heir to the Crown, according to the order established in the preceding paragraph, has not reached the age of thirty when the throne becomes vacant, his public functions shall be exercised by a Regent appointed in accordance with Article Eight of this Law, until the heir reaches the legal age. ”