Musnad Abu Ya'la al-Mawsili 115:366

Ubayd Allah narrated to us, Asim ibn Hilal narrated to us, Hammam narrated to us, from Qatadah, from Anas, from the Prophet (peace be upon him), who said: "Indeed, a people will emerge from the Fire after the scorching of it has afflicted them, and they will enter Paradise. They will be called 'the Jahannamiyyun' (the Hell-dwellers)."