Sayyiduna Abdullah (may Allah be pleased with him) narrates: I was walking with the Prophet (peace and blessings of Allah be upon him). The Prophet (peace and blessings of Allah be upon him) passed by Ibn Sayyad. The Prophet (peace and blessings of Allah be upon him) said: I have thought of something for you. He replied: It is "Dukh" (smoke). The Prophet (peace and blessings of Allah be upon him) said: Go away, you will not be able to go beyond your limits. The narrator says: Sayyiduna Umar (may Allah be pleased with him) submitted: O Messenger of Allah (peace and blessings of Allah be upon him), allow me to strike his neck. The Prophet (peace and blessings of Allah be upon him) said: No, if he is the one you fear, then you will not be able to kill him.