question #2 Sahih al-Bukhari 2659, Book 52, Hadith 23 : How does Islamic law address situations where a marriage is found to be invalid due to suckling?

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.