Anas bin Malik (RAA) narrated, "The first Li'an that took place in Islam was when Hilal bin Umaiyah accused his wife of having committed adultery with Shuraik bin Sahma.' Thereupon the Messenger of Allah (PBUH) said to him, "Either you produce evidence (for your claim) or you will receive punishment on your back (i.e. flogged for your accusation of it is false." (refer to hadith no.1138). Related by Abu Ya'la with a trustworthy chain of narrators.

He heard Messenger of Allah (PBUH) as saying: "Three men, amongst those who came before you, set out until night came and they reached a cave, so they entered it. A rock fell down from the mountain and blocked the entrance of the cave. They said: 'Nothing will save you from this unless you supplicate to Allah by virtue of a righteous deed you have done.' Thereupon, one of them said: 'O Allah! I had parents who were old, and I used to offer them milk before any of my children or slaves. One day, I went far away in search of grazing and could not come back until they had slept. When I milked as usual and brought the drink I found them both asleep. I hated to disturb them and also disliked to give milk to my children before them. My children were crying out of hunger at my feet but I awaited with the bowl in my hand for them to wake up. When they awoke at dawn, they drank milk. O Allah! If I did so to seek Your Pleasure, then deliver us from the distress caused by the rock'. The rock moved slightly but they were unable to escape. The next said: 'O Allah! I had a cousin whom I loved more than any one else (in another version he said: as a man can love a woman). I wanted to have sexual intercourse with her but she refused. Hard pressed in a year of famine, she approached me. I gave her one hundred and twenty dinars on condition that she would yield herself to me. She agreed and when we got together (for sexual intercourse), she said: Fear Allah and do not break the seal unlawfully. I moved away from her in spite of the fact that I loved her most passionately; and I let her keep the money I had given her. O Allah! If I did that to seek Your Pleasure, then, remove the distress in which we are.' The rock moved aside a bit further but they were still unable to get out. The third one said: 'O Allah! I hired some labourers and paid them their wages except one of them departed without taking his due. I invested his money in business and the business prospered greatly. After a long time, he came to me and said: O slave of Allah! Pay me my dues. I said: All that you see is yours - camels, cattle, goats and slaves. He said: O slave of Allah! Do not mock at me. I assured him that I was not joking. So he took all the things and went away. He spared nothing. O Allah! If I did so seeking Your Pleasure, then relieve us of our distress.' The rock slipped aside and they got out walking freely".

[Al-Bukhari ...