Saeed bin Jumhan (may Allah have mercy on him) says that we were fighting the Khawarij along with Hazrat Abdullah bin Abi Awfa (may Allah be pleased with him) when a slave of Hazrat Abdullah bin Abi Awfa (may Allah be pleased with him) joined the Khawarij. They were on that side and we were on this side. We called out to him, saying, "O Firoz! O Firoz!" and said, "O wretch! Your master, Hazrat Ibn Abi Awfa (may Allah be pleased with him), is here." He replied, "They would have been good people if they had migrated from among you." They asked, "What is this enemy of Allah saying?" We conveyed his statement to them, so he said, "Will I migrate again after the migration I made with the Prophet (peace and blessings be upon him)?" Then he said, "I heard the Prophet (peace and blessings be upon him) say: Glad tidings for the one who kills them or whom they kill."