Musannaf Ibn Abi Shayba 16:600

Abu Bakr narrated to us, he said: Ishaq bin Sulayman narrated to us, from Abu Sinan, from Abu Ishaq, he said: I saw people from the companions of the Messenger of Allah, may Allah bless him and grant him peace, wearing their waist-wrappers (izars) up to the middle of their shins. He mentioned Usama bin Zayd, Ibn Umar, Zayd bin Arqam, and Al-Bara bin Azib.