It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that Hilal bin Umayyah (may Allah be pleased with him) accused his wife, in the presence of the Prophet (peace and blessings be upon him), with Sharik bin Sahma'. Then he mentioned the hadith in the story of li'an. (The narrator) said that the Prophet (peace and blessings be upon him) said: "Keep watch on her: if she gives birth to a child with dark (kohl-like) eyes, full buttocks and plump shins, then he belongs to Sharik bin Sahma'." Then she gave birth to such a child, and the Prophet (peace and blessings be upon him) said: "Had it not been for what has already passed of the Book of Allah, I would have dealt with her in a different way."
Bukhari recorded it in the Sahih from Muhammad bin Bashshar.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الدعوى والبينات / 21277