It is narrated from Hazrat Abu Saeed (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: The awe and fear of people should not prevent any of you from speaking the truth when he sees it himself.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 11831
Hadith Gradingحکم دارالسلام:حديث صحيح، الجريري قد توبع