Musnad Imam Shafi'i

It is narrated from Sahl bin Sa’d (may Allah be pleased with him), and he, while relating the hadith of those who engaged in li’an (mutual cursing), said that the Prophet (ﷺ) said: “Look at her! If she gives birth to a child who is dark-skinned, with black eyes, and large buttocks, then I will think that her husband has spoken the truth about her. And if she gives birth to a red (fair-skinned), short-statured child like a lizard, then I will think that her husband has falsely accused her. The woman gave birth to a child resembling that man who had a bad attribute.”