The Koreishites sent a party of eighty men toward the camp of the Mussulmans to beat up their quarters. Being discovered, by the sentinels, they were surrounded, taken prisoners, and brought before Mahomet; who, thinking it proper at that time to be generous, released them. In return, Sohail son of Amru was sent to him with proposals of peace, which he agreed to accept. Mahomet, pretending he had a divine promise of a great booty, returned to Medina and, having concluded a peace for ten years with the Koreishites, was the better enabled to attack the Jews, his irreconcilable enemies. Accordingly, he went to Khaibar, a strong town about six days' journey northeast of Medina, and took that and several other strong places, whereto the Jews had retired, and carried a vast deal of treasure; this all fell into the hands of the Mussulmans. Being entertained at Khaibar, a young Jewess, to try, as she afterward said, whether he were a prophet or not, poisoned a shoulder of mutton, a joint Mahomet was particularly fond of. One of those who partook of it at the table, named Basher, died upon the spot; but Mahomet, finding it taste disagreeable, spat it out, saying, "This mutton tells me it is poisoned." The miracle-mongers improve this story, by making the shoulder of mutton speak to him; but if it did, it spoke too late, for he had already swallowed some of it; and of the effects of that morsel he complained in his last illness, of which he died three years after. In this year, Jannabi mentions Mahomet's being bewitched by the Jews. Having made a waxen image of him, they hid it in a well, together with a comb and a tuft of hair tied in eleven knots. The prophet fell into a very wasting condition, till he had a dream that informed him where these implements of witchcraft were, and accordingly had them taken away. In order to untie the knots Gabriel read to him the two last chapters of the _Koran_, consisting of eleven verses; each verse untied a knot, and, when all were untied, he recovered.[60] This year Mahomet had a seal made with this inscription, "Mahomet, the apostle of God." This was to seal his letters, which he now took upon him to write to divers princes, inviting them to Islamism. His first letter to this effect was sent to Badham, viceroy of Yemen, to be forwarded to Khusrau, king of Persia. Khusrau tore the letter, and ordered Badham to restore the prophet to his right mind or send him his head. Khusrau was presently after murdered by his son Siroes; Badham with his people turned Mussulmans, and Mahomet continued him in his government.