Mukhtasar Bukhari

Sayyiduna Ubadah bin Samit (may Allah be pleased with him) says: We pledged allegiance to the Messenger of Allah (peace and blessings of Allah be upon him) to listen and obey in happiness and displeasure, and that we would not dispute with the rulers for authority, and that wherever we may be, we would speak the truth, and we would not fear the blame of any blamer in the matter of Allah.