Sayyiduna Abu al-Tufayl (may Allah be pleased with him) said: Sayyiduna Ali (may Allah be pleased with him) was asked: "Did the Messenger of Allah (peace and blessings be upon him) single you out for anything?" He said: "He did not single us out for anything apart from the people in general, except what is in the sheath of my sword." Then he took out a scroll in which was written: "May Allah curse whoever slaughters for other than Allah, whoever steals the boundary markers of land, whoever curses his parents, and whoever gives shelter to an innovator."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيد والذبائح / 18952