It is narrated from Hazrat Ibn Abbas (may Allah be pleased with them both) that a woman came to the service of the Noble Prophet Muhammad (peace and blessings be upon him) with her son and said, "O Messenger of Allah (peace and blessings be upon him)! My son is affected by jinn, and he has fits morning and evening, and it is a very terrible sight." The narrator says: Then the Prophet (peace and blessings be upon him) stroked the boy's chest and prayed for him, so the boy vomited once, and something came out of his stomach that was black like a cucumber.