'Asim, what did Allah's Messenger (ﷺ) say to you? 'Asim said to 'Uwaimir: You did not bring something good. Allah's Messenger (ﷺ) did not like this religious verdict that I sought from him. 'Uwaimir said: By Allah, I will not rest until I have asked him about it. 'Uwaimir proceeded until he came to Allah's Messenger (ﷺ) as he was sitting amidst people, and said: Messenger of Allah, tell me about a person who found a man with his wife. Should he kill him, and then you would kill him, or how should he act? Thereupon Allah's Messenger (ﷺ) said: (Verses) have been revealed concerning you and your wife; so go and bring her. Sahl said that they both invoked curses (and further said): I was along with people in the company of Allah's Messenger (ﷺ). And when they had finished, Uwaimir said: Allah's Messenger, I shall have told a lie against her if I keep her (now). So he divorced her with three pronouncements before Allah's Messenger (ﷺ) had commanded him. Ibn Shihab said: Subsequently that was the practice of invokers of curses (al Mutala'inain)

I was asked about the invokers of curses during the reign of Mus'ab (b. Zubair) whether they could separate (themselves by this process). He said: I did not understand what to say. So I went to the house of Ibn 'Umar (Allah be pleased with them) in Mecca. I said to his servant: Seek permission for Me. He said that he (Ibn 'Umar) had been taking rest. He (Ibn 'Umar) heard my voice. and said: Are you Ibn Jubair? I said: Yes. He'said: Come in. By Allah, it must be some (great) need which has brought you here at this Hour. So I got in and found him lying on a blanket reclining against a pillow stuffed with fibres of date-palm. I said: O Abu'Abd al-Rahman, should there be separation between the invokers of curses? He said: Hallowed be Allah, yes, The first one who asked about it was so and so. he said: Messenger of Allah, tell me If one of us finds his wife committing adultery: what should he do? If he talks, that is something great, and if he keeps quiet that is also (something great) (which he cannot afford to do). Allah's Prophet (ﷺ) kept quiet (or some time). After some time he (that very person) came to him (Allah's Messenger) and said: I have been involved in that very cage about which I had asked you Allah the Exalted and Majestic then revealed (these) verses of Surah Nur: Those who accuse their wives (verse 6), and he (the Holy Prophet) recited them to him and admonished him, and exhorted him and informed him that the torment of the world is less painful than the torment of the Hereafter. He said: No, by Him Who sent you with Truth, I did not tell a lie against her. He (the Holy Prophet) then called her (the wife of that person who had accused her) and admonished her, and exhorted her, and informed her that the torment of this world is less painful than the torment of the Hereafter. She said: No, by Him Who sent thee with Truth, he is a liar. (it was) the man who started the swearing of oath and he swore in the name of Allah four times that he was among the truthful. and at the fifth turn he said: Let there be curse of Allah upon him if he were among the liars. Then the woman was called and she swore four times in the name of Allah that he (her husband) was among the liars, and at the fifth time (she said): Let there be curse upon her if he were among the truthful. He (the Holy Prophet) then effected separation between the two.

Nafi' reported on the authority of Ibn Umar (Allah be pleased with them) that a person invoked curse on the wife during the lifetime of Allah s Messenger (ﷺ), so he effected separation between them and traced the lineage of the son to his mother.

We were on the night of Friday staying in the mosque when a person from the Ansar came there and said: If a person finds hiswoman along with a man, and he speaks about it, you would lash him, and if he kills, you will kill him, and if he keeps quiet he shall have to consume anger. By Allah, I will definitely ask about him from Allah's Mescenger (ﷺ). On the following day he came to Allah's Messenger (ﷺ) and asked him thus: If a man were to find with his wife a man and if he were to talk about it, you would lash him; and if he killed, you would kill him, and if he were to keep quiet. he would consume anger, whereupon he (the Holy Prophet) said: Allah, solve (this problem), and he began to supplicate (before Him), and then the verses pertaining to li'an were revealed: Those who accuse their wives and have no witnesses except themselves (xxiv. 6). The person was then put to test according to these verses in the presence of the people. There came he and his wife in the presence of Allah's Messenger (ﷺ), and they invoked curses (in order to testify their claim). The man swore four times in the name of Allah that he was one of the truthful and then invoked curse for the fifth time saying: Let there be curse of Allah upon him if he were among the liars. Then she began to invoke curse. Allah's Messenger (ﷺ) said to her: just wait (and curse after considering over it), but she refused and invoked curse and when she turned away, he (Allah's Apostle) said: It seems that this woman shall give birth to a curly-haired black child, And so she did gave birth to a curly-haired black child.

I asked Anas b. Malik (Allah be pleased with him) knowing that he had a knowledge of (the case of li'an). He said: Hilal b. Umayya (Allah be pleased with him) accused his wife with the charge of fornication with Sharik b. Sahma, the brother of al-Bara'b Malik from the side of his mother. And he was the first person who invoked curse (li'an) in Islam. He in fact invoked curse upon her. Allah's Messenger (ﷺ) said: See to her if she gives birth to a white-complexioned child having dark hair and bright eyes; he must be the son of Hilal b. Umayya; and if she gives birth to a child with dark eyelids, curly hair and lean shanks, he must be the offspring of Sharik b. Sahma. He said: I was informed that she gave birth to a child having dark eyelids, curly hair and lean shanks.