It is narrated from Sayyiduna Ibn Amr, may Allah be pleased with him, that the Noble Prophet, peace and blessings be upon him, said: "When you see my Ummah fearing to call the oppressor an oppressor, then (the life of conscience or the acceptance of prayers) has departed from them."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 6776
Hadith Gradingحکم دارالسلام:إسناده ضعيف لانقطاعه، أبو الزبير لم يسمع من عبد الله بن عمرو