Sahih Muslim | Book 40 | Hadith Number 6818

Narrated by Abu Huraira
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: There was a dispute between the Hell and the Paradise and it (the Hell) said: The haughty and the proud would find abode in me. And the Paradise said: The meek and the humble would find their abode in me. Thereupon Allah, the Exalted and Glorious, (addressing the Hell) said: You are (the means) of My punishment by which I punish those of My servants whom I wish. (And addressing the Paradise) He said: You are only My Mercy by means of which I shall show mercy to those whom I wish, but each one of you would be full.