Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates: The incident of li'an (mutual cursing) occurred for the first time in Islam when Hilal bin Umayyah accused Sharik bin Sahma of committing adultery with his wife. He presented this case before the Prophet Muhammad (peace and blessings be upon him), so the Prophet (peace and blessings be upon him) said: "Hilal, bring four witnesses, otherwise the legal punishment will be carried out on your back." He said: "O Messenger of Allah (peace and blessings be upon him)! Allah knows that I am truthful, and Allah will surely reveal something to you that will prevent lashes from being inflicted on my back." Then Allah revealed this verse: "Those who accuse their wives..." until the end of the verse. So the Prophet (peace and blessings be upon him) called them and said: "Testify by the name of Allah that you are truthful regarding the accusation of adultery you have made against this woman." So he testified to this four times. Then, on the fifth time, the Prophet (peace and blessings be upon him) said to him: "(Say) May the curse of Allah be upon me if I am lying regarding what I have accused this woman of." So he did so. Then the Prophet (peace and blessings be upon him) called the woman and said: "Stand up and testify by the name of Allah that this man is lying regarding what he has accused you of." So the woman testified to this four times. On the fifth time, the Prophet (peace and blessings be upon him) said to the woman: "(Say) May the wrath of Allah be upon me if he is truthful regarding what he has accused you of." On the fourth or fifth time, the woman paused for a while, to the extent that people thought she would confess. Then the woman said: "I will not disgrace my people," and she continued her testimony. So the Prophet (peace and blessings be upon him) separated the two spouses and then said: "You people should observe: if she gives birth to a child with curly hair and thick shins, then he will be Sharik bin Sahma's; if she gives birth to a child with fair complexion, straight hair, and large eyes, then he will be Hilal bin Umayyah's." The narrator says: The woman gave birth to a wheat-colored child with curly hair and thick shins. So the Prophet (peace and blessings be upon him) said: "If the command of Allah's Book had not already been revealed regarding both of them, I would have dealt with this matter differently."