Musnad Ahmad 26:167

Yazid narrated to us, Hammad ibn Salamah informed us, from Thabit al-Bunani, from Anas ibn Malik, from Abdullah ibn Mas’ud, from the Prophet (peace and blessings of Allah be upon him) who said: "Indeed, the last person to enter Paradise is a man who walks upon the Sirat (bridge), stumbling once, walking once, and being scorched by the Fire once. When he passes the Sirat, he turns toward it and says: 'Blessed is He who saved me from you. Allah has given me what He has not given anyone among the first and the last.' Then a tree is raised for him, and he looks at it and says: 'O my Lord, bring me near to this tree so that I may seek shade in its shade and drink from its water.' He says: 'O My servant, perhaps if I bring you near to it, you will ask Me for something else?' He says: 'No, O my Lord,' and he makes a covenant with Allah that he will not ask Him for anything else. The Lord, Mighty and Majestic is He, knows that he will ask Him, because he sees what he has no patience for—meaning, regarding it—so He brings him near to it. Then another tree is raised for him, which is better than it, and he says: 'O my Lord, bring me near to this tree so that I may seek shade in its shade and drink from its water.' He says: 'O My servant, did you not covenant with Me?'—meaning that you would not ask Me for anything else. He says: 'O my Lord, this one; I will not ask You for anything else,' and he makes a covenant with Him. The Lord knows that he will ask Him for something else, so He brings him near to it. Then a tree is raised for him at the gate of Paradise, which is better than it, and he says: 'O my Lord, bring me near to this tree, so that I may seek shade in its shade and drink from its water.' He says: 'O My servant, did you not covenant with Me that you would not ask Me for anything else?' He says: 'O my Lord, this tree; I will not ask You for anything else,' and he makes a covenant with Him. The Lord knows that he will ask Him for something else, because he sees what he has no patience for, so He brings him near to it. Then he hears the voices of the people of Paradise, and he says: 'O my Lord, Paradise, Paradise!' He says: 'O My servant, did you not covenant with Me that you would not ask Me for anything else?' He says: 'O my Lord, admit me into Paradise.' He said: 'The Mighty and Majestic says: What will satisfy you from Me, O My servant? Would it please you if I gave you the world and the like of it with it?' He said: 'He says: Are You mocking me, O my Lord, while You are the Lord of Might?'" He said: Abdullah laughed until his molars appeared, then he said: "Will you not ask me why I laughed?" They said to him: "Why did you laugh?" He said: "Because of the laughter of the Messenger of Allah (peace and blessings of Allah be upon him)." Then the Messenger of Allah (peace and blessings of Allah be upon him) said to us: "Will you not ask me why I laughed?" They said: "Why did you laugh, O Messenger of Allah?" He said: "Because of the laughter of the Lord, when he said: 'Are You mocking me, while You are the Lord of Might?'"