Sahih Al Bukhari – Book of Judgments (Ahkaam)
Volumn 009, Book 089, Hadith Number 251.
—————————————–
Narated By Abu Huraira : Allah's Apostle said, "Whoever obeys me, obeys Allah, and whoever disobeys me, disobeys Allah, and whoever obeys the ruler I appoint, obeys me, and whoever disobeys him, disobeys me."
Junaid Tahir