Musannaf Ibn Abi Shayba 16:651

Abu Bakr narrated to us, he said: Abd al-Rahim narrated to us, from Isma'il ibn Sami', from Abu Razin, he said: Ali ibn Abi Talib went out, and upon him was a shirt made of Qahz (a type of fine linen or silk), and upon him was a mantle (burd) from Futrus.