Abu Al-Tufail says that someone asked Sayyiduna Ali (may Allah be pleased with him), "Tell us something that the Prophet (peace and blessings be upon him) told you especially." He replied, "The Prophet (peace and blessings be upon him) did not tell me anything privately that he concealed from other people, except that there is something in the sheath of my sword." Saying this, he took out a scroll from it, in which it was written: "The curse of Allah is upon the one who slaughters an animal in the name of other than Allah, the curse of Allah is upon the one who gives shelter to an innovator, the curse of Allah is upon the one who curses his parents, and the curse of Allah is upon the one who steals the boundary markers of the land."