Hazrat Aiz bin Amr (may Allah be pleased with him), who was among the extremely pious companions of the Prophet (peace be upon him), once went to Ubaidullah bin Ziyad and said: I heard the Prophet (peace be upon him) say, "The worst guardian is a tyrant ruler. Beware of being among them." Ibn Ziyad (disrespectfully) said, "Sit down, you are just the dregs left over from Muhammad's companions." Hazrat Aiz replied, "Can there be dregs among the companions of the Prophet (peace be upon him)? This only happens among those who come later and among other people besides them."