As you have already heard some of the conditions which were placed upon this marriage, it is fitting that you should hear about the terms of the pledge that was agreed upon by the kings. You should know that these things were announced in the king's chamber in the palace, in the presence of Don Martín, Bishop of Lisbon; Don Juan, Bishop of Coimbra; Dom Afonso, Bishop of Guarda; Fernán Pérez Calvillo, Dean of Tarazona; Gonzalo Rodríguez, Archdeacon of Toro; Don Juan Fernández, Count of Ourém; Gonçalo Vasques de Azevedo and other noblemen and squires, both Portuguese and Castilian.

Once all these clauses and others that are not laid down here were made known to everybody, the Archbishop of Santiago, who was the envoy of the King of Castile, as his ambassador and having been granted sufficient power by him, said that he promised by proxy, as he did at once, on the very faith of the said lord and king, swearing on his own soul on the Gospels as he touched them, that he, the King of Castile, would keep and fulfil all these conditions, each and every one, and he would never act against them, partially or completely, on his own behalf or that of anyone else, in public or in private, by word or by deed, or in any way whatsoever.

If he went against all or each of them separately, reasoning or speaking, partially or completely, rightfully or not rightfully, in public or in private, even if he were to leave it written in his will and final request, it would be worthless, and he, the Archbishop of Santiago, would be guilty of perjury, in addition to having to pay 100,000 gold marks as a penalty. Moreover, if his lord, the king, were to be guilty of such a thing, then he, in his name, would give King Fernando and Queen Leonor, as well as those people who had been appointed by them in their wills, the power to rule over the kingdom of Castile.

Furthermore, by the [Castilian] king's authority, everyone in his realm should surrender themselves in the towns and cities and yield their property in his kingdoms, and King Fernando would wage war on him and all his subjects until those 100,000 gold marks were paid.