The ugly, twisted hag now picked up the head of one of the dead lying there in the field – beheaded by Perceval that night – and placed it atop the headless trunk; then she took one of the casks, worthy only of the greatest lord or noble, and Perceval watched with rapt attention as she pulled out the stopper and poured into her palm a drop of liquid clearer than any rose water. She dabbed her finger in the drop and rubbed it on the lips of the knight whose head she’d put back in place; and in an instant his veins and joints all surged with life, every one of his wounds was healed as if he’d never been hurt at all, and he was up on his feet again before you could count to three. The potion had the power to restore the dead to life, for God, who delivers those He loves from Hell, was anointed and embalmed with it when He was laid in the sepulchre. The old hag replaced the heads of four and brought them back to life, just as she intended; she rubbed the potion on another’s lips and up he leapt.

Gerbert's Continuation of Perceval