It is narrated from Sayyiduna Ibn Amr (may Allah be pleased with him) that I heard the Noble Prophet (peace and blessings be upon him) saying: "When you see my Ummah fearing to call a tyrant a tyrant, then (the life of the conscience or the acceptance of prayers) has departed from them." And the Noble Prophet (peace and blessings be upon him) said: "In my Ummah also, there will be punishment of being swallowed by the earth, transformation of faces, and rain of stones."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 6521
Hadith Gradingحکم دارالسلام:إسناده ضعيف لانقطاعه، أبو الزبير لم يسمع من عبد الله بن عمرو، وقال رسول الله: «يكون فى امتي خسف و مسخ وقذف» ، حسن لغيره، و إسناده ضعيف