By this time King Don Garcia returned from the pursuit, singing as he came full joyfully, for he thought that the king his brother was a prisoner, and his great power overthrown. But there came one and told him that Don Sancho was rescued and in the field again, ready to give him battle a second time. Bravely was that second battle fought on both sides; and if it had not been for the great prowess of the Cid, the end would not have been as it was: in the end the Galegos and Portugueze were discomfited, and the King Don Garcia taken in his turn. And the King Don Sancho put his brother in better ward than his brother three hours before had put him, for he put him in chains and sent him to the strong castle of Luna. When King Don Sancho had done this he took unto himself the kingdom of Galicia and of Portugal, and without delay sent to his brother King Don Alfonso, commanding him to yield up to him the kingdom of Leon, for it was his by right. At this was the King of Leon troubled at heart; howbeit he answered that he would not yield up his kingdom, but do his utmost to defend it. Then King Don Sancho entered Leon, slaying and laying waste before him, as an army of infidels would have done; and King Don Alfonso sent to him to bid him cease from this, for it was inhuman work to kill and plunder the innocent: and he defied him to a pitched battle, saying that to whichsoever God should give the victory, to him also would he give the kingdom of Leon: and the King of Castille accepted the defiance, and a day was fixed for the battle. Both kings were in the field that day, and full hardily was the battle contested, and great was the mortality on either side, for the hatred which used to be between Moors and Christians was then between brethren.