That he had married Um Yahya bint Abu Ihab. He said. "A black slave-lady came and said, 'I suckled you both.' I then mentioned that to the Prophet (ﷺ) who turned his face aside." `Uqba further said, "I went to the other side and told the Prophet (ﷺ) about it. He said, 'How can you (keep her as your wife) when the lady has said that she suckled both of you (i.e. you and your wife?)" So, the Prophet (ﷺ) ordered him to divorce her.
Sahih al-Bukhari Book 52, Hadith 23
← Previous Hadith The Prophet (ﷺ) said, "Isn't the witness of a woman equal to half of that of a man?" The women said, "Yes." He said, "This is because of the deficiency of a woman's mind."

Sahih al-Bukhari Book 52, Hadith 22 Next Hadith → I married a woman and later on a woman came and said, "I suckled you both." So, I went to the Prophet (to ask him about it). He said, "How can you (keep her as a wife) when it has been said (that you were foster brother and sister)? Leave (divorce) her.

Sahih al-Bukhari Book 52, Hadith 24