Musnad Abu Ya'la al-Mawsili 3:243

'Abdullah ibn 'Umar ibn Aban narrated to us, 'Abdur-Rahim ibn Sulayman narrated to us, Muhammad ibn Ishaq narrated to us, from 'Abdullah ibn Abi Najih, from Mujahid, who said: 'Ali ibn Abi Talib said: The Messenger of Allah (may Allah bless him and grant him peace) married Fatimah to me for a Hutamiyyah iron coat of mail. He had armed me with it and said: "Send it to her so that she may adorn herself with it." So I sent it to her. By Allah, its price was four hundred dirhams.