Urwah bin Zubair (ra) narrates that Hazrat Zubair (ra) was so tall that whenever he mounted [upon an animal], his feet would touch the ground.
(al-Isabah Fi Tamyeez al-Sahabah, Vol. 2, p. 458, Zubair (ra) bin al-Awwam, Dar-ul-Kutub al-Ilmiyyah, Beirut, 1995)