What is the legal (Sharia) evidence for using Sidr leaves in the treatment of sorcery, and what is the substance found in 'Ajwa (date paste) that protects against sorcery, and is there a medicine made from this same substance to treat sorcery?

No evidence has been found in the Sunnah to prove or disprove the efficacy of treating magic with Sidr leaves. It has been established that whoever eats seven Ajwa dates from Medina every morning will not be harmed by poison or magic on that day, due to the Prophet, peace and blessings be upon him, saying: "Whoever eats seven Ajwa dates every morning will not be harmed by poison or magic on that day." Some scholars mentioned that this is due to the blessing of his prayer, peace and blessings be upon him, for the dates of Medina, and is not specific to Ajwa dates.