Musnad Ahmad 30:3202

Isma'il narrated to us, he said: Ayyub informed us, from Nafi', from Abu Hurayrah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Hasten with your funerals. For if it is good, you are hastening it toward it; and if it is otherwise, you are casting it off your shoulders," or he said: "off your backs."