Musnad Ahmad 25:526

Ya'qub narrated to us, my father narrated to us, from Ibn Ishaq, Salama ibn Kuhayl al-Hadrami and Muhammad ibn al-Walid ibn Nuwayfi', the freed slave of the family of al-Zubayr, both narrated to me from Kurayb, the freed slave of Abdullah ibn Abbas, from Abdullah ibn Abbas, who said: "I saw the Messenger of Allah, may Allah bless him and grant him peace, praying at night in a Hadrami garment of his, wrapped in it, with nothing else on him."