It is narrated from Hazrat Anas (may Allah be pleased with him) that Hazrat Hilal bin Umayyah (may Allah be pleased with him) accused his wife of committing adultery with Shareek bin Samha. The Prophet (peace and blessings be upon him) said: Take care of this woman. If she gives birth to a child with curly hair, black eyes, and thin shins, then the child will be that of Shareek bin Samha. But if she gives birth to a fair-skinned child with straight hair and deep-set eyes, then the child will be that of Hilal bin Umayyah. So, when the woman gave birth, the child had the first set of characteristics (i.e., those of Shareek bin Samha).