Hadith 8:1292
Abu Bakr narrated to us, he said: Zayd ibn al-Hubab narrated to us, from Musa ibn Ubaydah, he said: I saw Umar ibn Abd al-Aziz in the state of ihram, and upon him was a Hibara garment.
حدثنا أبو بكر قال حدثنا زيد بن حباب عن موسى بن عبيدة قال رأيت عمر بن عبد العزيز محرما وعليه حلة حبرة