It is narrated from Sayyiduna Zayd bin Thabit (may Allah be pleased with him) that he said in the presence of the Prophet (peace and blessings be upon him): Leadership (governance) is an evil thing. the Prophet (peace and blessings be upon him) said: "Leadership is an excellent thing for one who takes it by its right and in a lawful way, and leadership is an evil thing for one who takes it without right; it will then be a source of regret for him on the Day of Resurrection."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4814