Musnad Ahmad 32:230

Qaran ibn Tamam narrated to us, from Yunus ibn Abi Ishaq, from Burayd ibn Abi Maryam, from Anas ibn Malik, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "No servant seeks refuge from the Fire three times, except that the Fire says: 'O Allah, grant him refuge from me.' And he does not ask for Paradise, except that Paradise says: 'O Allah, admit him into me.'"