Sayyidina Abu Hurairah (RA) reported that Allah’s Messenger (SAW) said; "When Allah created Paradise and Hell, He sent Jibril to paradise, saying, “Look at it and at what I have prepared in it for its inhabitants.” So, he went to it and looked at it and at what Allah had prepared in it for its dwellers. He returned to Him and said, “By Your Might, whosever hears of it will enter it.” He commanded that it should be encircled with hardhisps, and said to him, “Go back to it and look at what I have prepared for its inhabitants in it.” So, he returned to it and saw that it was encircled with difficulties and returned to Allah and said “By Your Might I fear that no one will enter it” He said “Go to hell and look at it and at what I have prepared in it for its dwellers.” He observed that part of it was over-riding other part of it. He returned to Allah and said, “By Your Might, anyone who hears of it will not enter it." Allah ordered that it should be encircled with passions and desires, and it was, and said (to Jibril), “Go back to it.” He went to it and said, “By Your Might, I fear that no one will be able to save himself from it, and will enter it.”
[Ahmed 8406, Abu Dawud 4744, Nisai 3768]