SPEAKING THE TRUTH TO A TYRANT H 195 "Of the highest form of striving (jihad) is to say that which is just to a tyrant." R 195 Abu Daud and Tirmidhi with a chain up to Abu Sa'id Khudri who related that the Prophet, praise and peace be upon him, said this.
194- الحادي عشر : عن أَبي سعيد الخدري رضي الله عنه ، عن النَّبيّ صلى الله عليه وآله وسلم ، قَالَ : "أفْضَلُ الجِهَادِ كَلِمَةُ عَدْلٍ عِنْدَ سُلْطَانٍ جَائرٍ" رواه أَبُو داود والترمذي ، وَقالَ : "حديث حسن" .