Jami` at-Tirmidhi Book 47, Hadith 384
the Prophet said: “You will be gathered barefoot, naked and uncircumcised.” “A woman said: “Will we see” or “look at each other’s nakedness?” He said: “O so-and-so! Every man among them on that Day will have enough to make him careless of others.”
“He frowned and turned away” was revealed about Ibn Umm Maktum the blind man. He came to the Messenger of Allah saying: ‘O Messenger of Allah! Guide me.’ At that time, there was a revered man from the idolaters with the Messenger of Allah. So the Messenger of Allah turned away from him and faced the other man, saying: ‘Do you think that there is something wrong with what I am saying?’ He said: ‘No.’ So it was about that that it was revealed.”
The Messenger of Allah said: “Whoever wishes to look at the Day of Resurrection, as if he is seeing it with this eye, then let him recite: ‘When the sun Kuwwirat’ and ‘When the heaven is cleft sunder (Infatarat) and ‘When the heaven is split asunder.’”