Musnad Abu Ya'la al-Mawsili 130:58

Muhammad ibn Bahr narrated to us, Mubarak narrated to us, Abd al-Aziz narrated to us, from Anas, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "There will be in this nation sinking into the earth, transformation (into animals), tremors, and pelting (with stones)."