Afterwards the Castillians arrived, and they kissed his hands in homage, all, save only my Cid.  And when King Don Alfonso saw that the Cid did not do homage and kiss his hand, as all the other chief persons had done, he said, “Since now ye have all received me for your Lord, and given me authority over ye, I would know of the Cid Ruydiez why he will not kiss my hand and acknowledge me; for I would do something for him, as I promised unto my father King Don Ferrando, when he commended him to me and to my brethren.”  And the Cid arose and said, “Sir, all whom you see here present, suspect that by your counsel the King Don Sancho your brother came to his death; and therefore I say unto you that, unless you clear yourself of this, as by right you should do, I will never kiss your hand, nor receive you for my lord.”  Then said the King, “Cid, what you say pleases me well; and here I swear to God and to St. Mary, that I never slew him, nor took counsel for his death.  And I beseech ye therefore all, as friends and true vassals, that ye tell me how I may clear myself.”  And the chiefs who were present said, that he and twelve of the knights who came with him from Toledo, should make this oath in the church at St. Gadea at Burgos, and that so he should be cleared.

So the King and all his company took horse and went to Burgos.  And when the day appointed for the oath was come, the King came forward upon a high stage that all the people might see him, and my Cid came to him to receive the oath; and my Cid took the book of the Gospels and opened it, and laid it upon the altar, and the King laid his hands upon it, and the Cid said unto him, “King Don Alfonso, you come here to swear concerning the death of King Don Sancho your brother, that you neither slew him nor took counsel for his death; say now you and these hidalgos, if ye swear this.”  And the King and the hidalgos answered and said, “Yea, we swear it.”  And the Cid said, “If ye knew of this thing, or gave command that it should be done, may you die even such a death as your brother the King Don Sancho, by the hand of a villain whom you trust; one who is not a hidalgo, from another land, not a Castillian”; and the King and the knights who were with him said “Amen.”  And the King’s colour changed; and the Cid repeated the oath unto him a second time, and the King and the twelve knights said “Amen” to it in like manner, and in like manner the countenance of the King was changed again.  And my Cid repeated the oath unto him a third time, and the King and the knights said “Amen.”  But the wrath of the King was exceedingly great, and he said to the Cid, “Ruydiez, why dost thou thus press me, man?  To-day thou swearest me, and to-morrow thou wilt kiss my hand.”  And from that day forward there was no love toward my Cid in the heart of the King.