Musnad Ahmad 30:1785

Aswad narrated to us, Abu Bakr narrated to us, Muhammad ibn ‘Amr narrated to us, from Abu Salamah, from Abu Hurairah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Death will be brought on the Day of Resurrection as a piebald ram. It will be said: 'O people of Paradise, do you recognize this?' He said: They will look out, fearful and apprehensive. He said: They will say: 'Yes.' He said: Then the people of the Fire will be called: 'Do you recognize this?' They will say: 'Yes.' He said: Then it will be slaughtered. Then it will be said: 'Eternity in Paradise and eternity in the Fire.'"