Musannaf Ibn Abi Shayba 19:809

Abu Bakr narrated to us, he said: Ibn Idris narrated to us, from his father, and his paternal uncle, and Yahya bin Abi al-Haytham, from his father, from his grandfather, that he witnessed Ali, and a man and a woman were brought to him who were found in the ruins of Murad. So they were brought to Ali, and he said: "The daughter of Umar, and my stepdaughter who is under my care." His companions began saying to her: "Say: 'He is my husband.'" So she said: "He is my husband." Ali said: "Take the hand of your wife."