Musnad Ahmad 32:500

'Abd al-Samad narrated to us, Aban narrated to us, Qatadah narrated to us, from Anas ibn Malik, that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Hell will continue to say: 'Is there any more?' Then the Lord of the Worlds will say [it], and He will place His foot into it, so some of it will shrink into the other, and it will say: 'By Your Might, enough, enough!' And there will still remain a surplus in Paradise, until Allah creates another creation, and He will cause them to dwell in the surplus of Paradise."