(37) باب فَضْلِ مَنْ تَكَلَّمَ بِالْحَقِّ عِنْدَ إِمَامٍ جَائِرٍ
It was narrated from Tariq bin Shihab that:
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." (ES)
Reference (ES): Sunan an-Nasa'i 4209 (ES)
In-book reference (ES): Book 39, Hadith 61 (ES)
English translation (ES): Vol. 5, Book 39, Hadith 4214 (ES)