Musnad Ahmad 32:440

Bahz and 'Affan narrated to us, they said: Aban narrated to us—Bahz ibn Yazid al-'Attar said: Qatadah narrated to us, Anas ibn Malik narrated to us, he said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Hell will continue to say: 'Is there any more?' He said: 'Then the Lord of the Worlds will place His foot into it, and it will draw together, one part to another.' And it will say: 'Enough, enough, by Your Might.' And there will still remain a surplus in Paradise, until Allah creates for it another creation, and He will cause them to dwell in the surplus of Paradise."