أَفْضَلُ الْجِهَادِ: مَنْ قَالَ كَلِمَةَ حَقٍّ عِنْدَ سُلْطَانٍ جَائِرٍ (Tirmidhi)
Translation: Among the most excellent forms of striving is to speak a word of truth before an unjust ruler.
أَفْضَلُ — most excellent; الْجِهَادِ — striving; كَلِمَةَ حَقٍّ — a word of truth; سُلْطَانٍ جَائِرٍ — an unjust ruler.
Brief grammar: In كَلِمَةَ حَقٍّ, كَلِمَةَ is the first term of an iḍāfah and حَقٍّ is its genitive complement. جَائِرٍ describes سُلْطَانٍ; both are indefinite and genitive.
The teaching gives high moral value to truthful speech when power makes honesty difficult. It concerns truth, fairness, and integrity rather than mere confrontation.