Sayyiduna Abu Umamah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, the last man to enter Paradise will come along the Sirat turning over and over, from his back to his belly, like a boy whose father is beating him and he is running away from him; his deeds will leave him unable to run. He will say: 'O my Lord, bring me to Paradise and save me from the Fire.' Allah Almighty will reveal to him: 'My servant, if I save you from the Fire and admit you into Paradise, will you confess your sins and your faults to Me?' The servant will say: 'Yes, O my Lord; by Your might and majesty, if You save me from the Fire, I will certainly confess my sins and my faults to You.' So he will cross the bridge, and the servant will say within himself: 'If I confess my sins and my faults to Him, He will surely send me back to the Fire.' Then Allah Almighty will reveal to him: 'My servant, confess your sins and your faults to Me; I will forgive them for you and admit you into Paradise.' The servant will say: 'No, by Your might, I have never committed a sin, nor have I ever committed a fault.' Allah Almighty will reveal to him: 'My servant, I have evidence against you.' The servant will look to the right and to the left and will not see anyone, and he will say: 'O my Lord, show me Your evidence.' So Allah Almighty will make his skin speak about his minor (sins). When the servant sees this, he will say: 'O my Lord, by Your might, I have far greater sins hidden away.' Allah, the Mighty and Majestic, will reveal to him: 'My servant, I know them better than you; confess them to Me, I will forgive them for you and admit you into Paradise.' So the servant will confess his sins and will enter Paradise." Then the Messenger of Allah (peace and blessings be upon him) laughed until his (peace and blessings be upon him) molar teeth became visible, and he said: "This is the lowest in rank of the people of Paradise; so what of the one above him?"
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7638