Hadith 8:3261
Abu Bakr narrated to us, he said: Qabisa narrated to us, from Sufyan, from Ibn Jurayj, that Umar ibn Abd al-Aziz performed Tawaf around the House (the Kaaba) while wearing his garment in the Idtiba' style (with his right shoulder uncovered).
حدثنا أبو بكر قال نا قبيصة عن سفيان عن بن جريج أن عمر بن عبد العزيز طاف بالبيت مضطبعا