Musnad Abu Ya'la al-Mawsili 243:56

Abu Hisham al-Rifa'i narrated to us, Yahya ibn Yaman narrated to us, Harmalah ibn Qays narrated to us, from Abu Burdah, from Abu Musa, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "My nation is a nation that has been shown mercy. There is no punishment upon it in the Hereafter; its punishment is in the world: earthquakes, tribulations, and killing."