Sahih Muslim 2822
Sahih Muslim · Book 53: The Book of Paradise, its Description, its Bounties and its Inhabitants
Anas b. Malik reported:
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ بْنِ قَعْنَبٍ ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ ، عَنْ ثَابِتٍ ، وَحُمَيْدٍ ، عَنْ أَنَسِ بْنِ مَالِكٍ ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " حُفَّتِ الْجَنَّةُ بِالْمَكَارِهِ وَحُفَّتِ النَّارُ بِالشَّهَوَاتِ " .
The Paradise is surrounded by hardships and the Hell-Fire is surrounded by temptations.