Musnad Ahmad 27:1533

Ibrahim ibn Ishaq narrated to us, Ibn al-Mubarak narrated to us, from ‘Umar ibn Muhammad ibn Zayd, my father narrated to me, from Ibn ‘Umar, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "When the people of Paradise have entered Paradise, and the people of the Fire have entered the Fire, death will be brought until it is made to stand between Paradise and the Fire. Then it will be slaughtered. Then a caller will call out: 'O people of Paradise, eternity, no death! O people of the Fire, eternity, no death!' So the people of Paradise will increase in joy upon their joy, and the people of the Fire will increase in sorrow upon their sorrow."