Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that the Noble Prophet (peace and blessings be upon him) made them perform li'an due to the pregnancy being doubtful.

. Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrates that the Noble Prophet (peace and blessings be upon him) made Aylan tribe’s Uwaymir and his wife perform li’an (mutual cursing). His wife was pregnant. Uwaymir said: By Allah! Since the first time I irrigated the date palms, I have not gone near her (so how did she become pregnant), and I watered the date palms two months after grafting. This Uwaymir, who was the husband of the woman, had thin shins and thin arms, and there was a reddish tinge in his hair. The man with whom the woman was accused was Sharik bin Sahma. The woman gave birth to a child who was dark-skinned, had curly hair, thick arms, and strong shins. Ibn Shaddad bin Had said to Sayyiduna Ibn Abbas (may Allah be pleased with them both): Was this the same woman about whom the Noble Prophet (peace and blessings be upon him) said: If I were to stone anyone without witnesses, I would have stoned this woman? He said: No, it was not her, it was another woman; she used to display immodesty despite being in Islam.

Sayyiduna Sahl bin Sa’d (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said to Asim bin Adi: Keep this woman in your custody until she gives birth; if she gives birth to a child with curly hair and a black tongue, then he is the son of Sahma. When the child was born, Asim says that I took hold of him and the hair on his head was thick like that of a young goat, then I took hold of his jaw and it was red like a jujube, and when I looked at his tongue from the front, it was black like a date. I said, the Noble Prophet (peace and blessings be upon him) has spoken the truth.