Sahih Bukhari Volume 8, Book 73, Hadith Number 5.
So this state of mine and theirs continued till the day dawned. (O Allah!) If you considered that I had done that only for seeking Your pleasure, then please let there be an opening through which we can see the sky.’ So Allah made for them an opening through which they could see the sky. Then the second person said, ‘O Allah! I had a she-cousin whom I loved as much as a passionate man loves a woman. I tried to seduce her but she refused till I paid her one-hundred Dinars So I worked hard till I collected one hundred Dinars and went to her with that But when I sat in between her legs (to have sexual intercourse with her), she said, ‘O Allah’s slave! Be afraid of Allah ! Do not deflower me except legally (by marriage contract). So I left her O Allah! If you considered that I had done that only for seeking Your pleasure then please let the rock move a little to have a (wider) opening.’
So Allah shifted that rock to make the opening wider for them. And the last (third) person said ‘O Allah ! I employed a laborer for wages equal to a Faraq (a certain measure: of rice, and when he had finished his job he demanded his wages, but when I presented his due to him, he gave it up and refused to take it. Then I kept on sowing that rice for him (several times) till managed to buy with the price of the yield, some cows and their shepherd Later on the laborer came to me an said. ‘(O Allah’s slave!) Be afraid o Allah, and do not be unjust to me and give me my due.’ I said (to him). ‘Go and take those cows and their shepherd. So he took them and went away. (So, O Allah!) If You considered that I had done that for seeking Your pleasure, then please remove the remaining part of the rock.’ And so Allah released them (from their difficulty).”