It is narrated from Sayyiduna Zaid bin Arqam (may Allah be pleased with him) that a man from among the Jews cast magic upon the Noble Prophet (peace and blessings be upon him), due to which he (peace and blessings be upon him) remained ill for several days. Eventually, Jibreel (peace be upon him) came and said: "A man from among the Jews has cast magic upon you and for this purpose, he has tied magical knots. This act of magic is placed in such-and-such well. Send someone to bring out this act." So the Messenger of Allah (peace and blessings be upon him) sent Sayyiduna Ali (may Allah be pleased with him), who brought it out and untied those knots. It was as if the Prophet (peace and blessings be upon him) had been released from a rope. The Prophet (peace and blessings be upon him) neither mentioned this matter to that Jew nor looked towards his face, until he died.