Musnad Abu Ya'la al-Mawsili 5:19

Zuhayr narrated to us, Muhammad ibn al-Hasan al-Madani narrated to us, he said: Umm 'Urwah narrated to me, from her sister 'Aishah bint Ja'far, from her father, from her grandfather al-Zubayr, from the Messenger of Allah (may Allah bless him and grant him peace): That on the day of the conquest of Makkah, he gave him the banner of Sa'd ibn 'Ubadah. So al-Zubayr entered Makkah with two banners.