It is narrated from Hazrat Hudhaifa (may Allah be pleased with him) that one day he said, "O people! Why do you not ask me questions? People used to ask the Holy Prophet (peace and blessings be upon him) about good, and I used to ask about evil. Indeed, Allah Almighty sent His Holy Prophet (peace and blessings be upon him), and he invited people from disbelief to faith, called them from misguidance to guidance. Whoever was to accept his words, accepted this invitation, and by the blessing of truth, dead things became alive, and by the misfortune of falsehood, even living things became dead. Then the era of Prophethood ended, and the Caliphate upon the way of Prophethood was established."