Musannaf Ibn Abi Shaybah

Hazrat Bukair bin Faid narrates that once a man got married, and then a woman came and claimed that she had breastfed both of them. The man took the matter to Hazrat Ali (may Allah be pleased with him). He said, "She is your wife; no one can make her unlawful for you. However, if you separate from her, it is better." He then asked Hazrat Ibn Abbas (may Allah be pleased with them both) about this matter, and he also said the same.