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."
Sunan an-Nasa'i Book 39, Hadith 61
← Previous Hadith "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."'

Sunan an-Nasa'i Book 39, Hadith 60 Next Hadith → "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.

Sunan an-Nasa'i Book 39, Hadith 62