The Book of al-Bay'ah
كتاب البيعة
Chapter 36: Those Who Do Not help The Leader To Do Wrong.
"The Messenger of Allah came out to us and we were nine, fie and four, some 'Arabs and some non- 'Arabs. He said: 'Listen. Have you heard that after me there will be rulers, whoever enters upon them and believes their lies and help them in their wrongdoing is not of me, and I am not of him, and he will not come to me at the Cistern? Whoever does not enter upon them or belive their lies or help them in their wrongdoing is of me and I am of him, and he will come to me at the Cistern."'
Chapter 37: The Virtue Of The One Who Speaks The Truth Before An Unjust Ruler
a man asked the Prophet, when he had put his leg in the stirrup: "Which kind of Jihad is best?'" He said: " a word of truth spoken before an unjust rulers."
Chapter 38: The Reward Of The One Who Fulifills The Pledge He Made
"We were with the Prophet in a gathering and he said: 'Pledge to me that you will not associate anything with Allah, you will not steal, and you will not have unlawful sexual relations.' He recited the Verse to them (and said) Whoever does any of these things, and Allah conceals him then it is up to Allah, the mighty and Sublime: If He wills, He will punish him, and if He wills, He will forgive him.
Chapter 39: It is disliked to be eager for positions of Authority
"You will become keen for positions of authority, but that will become a regret and loss. What a good life they will live, but how hard it will be for them when they die."