Musannaf Ibn Abi Shayba 26:596

Hushaym narrated to us, from Adham al-Sadusi, from some people of his tribe, that a woman died while she was a Muslim, and she left behind a mother of hers who was a Christian. Her mother then embraced Islam before the inheritance of her daughter was divided. They came to Ali and mentioned that to him. He said, "She has no inheritance." Then he said, "How much did she leave?" They informed him, so he said, "Give her something."