It was narrated from 'Abdullah bin Mas'ood (رضي الله عنه) that
The Prophet (ﷺ) said: "The last one to enter Paradise will be a man who will walk on the Sirat; he will stumble once and walk once and be touched by the Fire once. When he has crossed the Sirat, he will turn to it and say: ‘Blessed be the One Who has saved me from you. Allah has given me that which was not given to anyone of the first and the last.’ Then a tree will be raised for him and he will look at it and will say: 'O Lord, bring me close to this tree, so that I might seek its shade and drink from its water.’ He will say: 'O My slave, perhaps if I bring you close to it, you will ask Me for something else.' He will say: ‘No, O Lord,’ and he will promise Allah that he will not ask Him for anything else, although the Lord knows that he will ask Him, because he will see something that he cannot help wanting. So He will bring him close to it. Then he will raise up for him another tree that is even more beautiful than it, and he will say: ‘O Lord, bring me close to this tree, so that I might seek its shade and drink from its water.’ He will say: 'O My slave, did you not promise Me,’ i.e., that you would not ask Me for anything else? He will say: ‘O Lord, only this, and I will not ask You for anything else.' And he will make a promise to Him, although the Lord knows that he will ask Him for something else. So He will bring him close to it. Then he will raise up for him a tree at the gate of Paradise that is more beautiful than it, and he will say: ‘O Lord, bring me close to this tree, so that I might seek its shade and drink from its water.’ He will say: ‘O My slave, did you not promise Me that you would not ask Me for anything else?’ He will say: 'O Lord, only this tree and I will not ask You for anything else.' And he will make a promise to Him, although the Lord knows that he will ask Him for something else, because he will see something that he cannot help wanting. So He will bring him close to it. Then he will hear the voices of the people of Paradise, and he will say: 'O Lord, Paradise, Paradise.’ He will say: 'O My slave, did you not promise Me that you would not ask Me for anything else?" He will say: 'O Lord, admit me to Paradise.’ Allah, may He be glorified and exalted will say: ‘What will make you stop asking, O My slave? Would it please you if I give you of Paradise the equivalent of the world and as much again?’ He will say: ‘Are you making fun of me, O my Lord, when You are the Lord of Glory?’” And ‘Abdullah smiled so much that his molars could be seen, then he said: Why don't you ask me why I am smiling? They said: Why are you smiling? He said: Because the Messenger of Allah (ﷺ) smiled, then the Messenger of Allah (ﷺ) said to us: "Why don't you ask me why I am smiling?” They said: Why are you smiling, O Messenger of Allah? He said: "because the Lord smiled when he said, ‘Are you making fun of me, when You are the Lord of Glory?’”