Sahih Muslim Book 53, Hadith 95
This hadith has been narrated on the authority of Ayyub with the same chain of transmitters.
He who is taken to account on the Day of Resurrection is in fact put to torment. I said: Has Allah, the Exalted and Glorious, not said this: 'He will be made subject to an easy reckoning" (Ixxxiv. 8)? Thereupon he said: (What it implies) is not the actual reckoning, but only the presentation of one's deeds to Him. He who is thoroughly examined in reckoning is put to torment.
Everyone who is reckoned thoroughly is undone. I said: Allah's Messenger, has Allah not called (reckoning) as easy reckoning? Thereupon he said.. It implies only presenta- tion of (one's deeds to Him), but if one is thoroughly examined in reckoning, he in fact is undone.