Musnad Ahmad 32:586

'Abd al-Samad narrated to us, al-Hakam ibn 'Atiyyah narrated to us, Abu al-Mukhayyis narrated to us, from Anas ibn Malik, who said: They said, "O Messenger of Allah, your freed slave so-and-so has been martyred." He said, "Nay, for I saw a cloak upon him that he had misappropriated on such-and-such a day."