Musannaf Ibn Abi Shayba 16:619

Abu Bakr narrated to us, he said: Ali bin Mushir narrated to us, from al-Ajlah, from Abdullah bin Abi al-Hudhayl, who said: I saw Ali wearing a Razi or Raqi shirt. When he let it loose, it reached the middle of his shins, and when he stretched it, it did not go past his fingertips.