It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "On the Day of Resurrection, the severest punishment will be for the person who was killed by a prophet, or who killed a prophet, or who was a leader of misguidance, or who mutilated corpses."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 3868