It was narrated from Abu Sa’eed Al-Khudri that the Messenger of Allah (ﷺ) stood up to deliver a sermon, and one of the things he said was:“Indeed, fear of people should not prevent a man from speaking the truth, if he knows it.” Then Abu Sa'eed wept and said: "By Allah, we have seen things that made us scared (and we did not speak up)

English translation · Sunan Ibn Majah