Musnad Ahmad 32:1169

Yazid ibn Harun narrated to us, Hammad ibn Salamah informed us, from Thabit al-Bunani, from Anas ibn Malik, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The most affluent person in the world among the people of the Fire will be brought on the Day of Resurrection, and he will be dipped once into the Fire. Then it will be said to him: 'O son of Adam, have you ever seen any good? Has any bliss ever passed you by?' He will say: 'No, by Allah, O Lord.' And the most miserable person in the world among the people of Paradise will be brought, and he will be dipped once into Paradise. Then it will be said to him: 'O son of Adam, have you ever seen any misery? Has any hardship ever passed you by?' He will say: 'No, by Allah, O Lord, no misery has ever passed me by, nor have I ever seen any hardship.'"