Musnad Abu Ya'la al-Mawsili 42:340

Zuhayr narrated to us, Affan narrated to us, Hammad ibn Salamah narrated to us, Ata’ ibn al-Sa’ib informed us, from Ubayd Allah ibn Abd Allah ibn Utbah, from Abu Sa’id al-Khudri, that the Messenger of Allah (may Allah bless him and grant him peace) said: "Paradise and the Fire boasted to one another. The Fire said: 'O Lord, the tyrants, the kings, the great ones, and the noble ones enter me.' And Paradise said: 'O Lord, the poor, the weak, and the destitute enter me.' So Allah said to the Fire: 'You are My punishment; I afflict with you whom I will.' And He said to Paradise: 'You are My mercy; you encompass everything. And for each of you is your fill.' As for the Fire, its people will be cast into it, and it will say: 'Are there any more?' until the Blessed and Exalted comes to it, and it will shrink and say: 'Enough, enough.' As for Paradise, there will remain in it what Allah wills to remain, then Allah will create for it a creation from what He wills."