Musnad Ahmad 788:266

Yazid narrated to us, he said: Al-Mas'udi informed us, from Sa'id ibn Abi Burdah, from his father, from his grandfather Abu Musa, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, my nation is a nation that has been shown mercy. There is no punishment upon it in the Hereafter; its punishment is only in the world: killing, tribulations, and earthquakes."