Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates this statement of the Noble Prophet (peace and blessings be upon him): "When you encounter Ahbar bin Aswad and Nafi’ bin ‘Abd Qais, burn both of them in the fire." After this, the Noble Prophet (peace and blessings be upon him) said: "Only Allah Almighty can punish with fire. When you encounter both of them, then kill them."