As a penance, he rolled himself naked in the snow and among brambles; he commanded his friars to revile him, and when he said, “O Brother Francis, for thy sins thou hast deserved to be plunged into hell”; Brother Leo was to answer, “It is true; thou hast deserved to be buried in the very bottom of hell.” In 1215 his convent was removed to Alvernia, among the solitudes of the Apennines. In 1219 he went to Egypt to convert the Sultan, and preached to him in his camp near Damietta, but without the desired effect. He returned to the duties of his convent with unabated zeal; and was sometimes seen by his followers lifted from the ground by the fervor of his prayers; and here he received in a vision of the Crucifixion the stigmata in his hands and feet and side. Butler, Lives of the Saints , X 100, says:⁠— “The marks of nails began to appear on his hands and feet, resembling those he had seen in the vision of the man crucified. His hands and feet seemed bored through in the middle with four wounds, and these holes appeared to be pierced with nails of hard flesh; the heads were round and black, and were seen in the palms of his hands, and in his feet in the upper part of the instep.