Abdullah ibn Umar
Also present were such distinct companions as Sa'id ibn Zayd, Fadl ibn Abbas, Abdul-Rahman ibn Abi Bakr (the son of Abu Bakr), Abdullah ibn Umar (the son of Umar), Aban ibn Uthman (the son of Uthman), Abdulreman ibn Khalid (the son of Khalid), Abdullah ibn Ja'far (the nephew of Ali), Ammar ibn Yasir, Miqdad ibn Aswad, Abu Dharr al-Ghifari, Malik al-Ashtar, Abu Ayyub al-Ansari, Qays ibn Sa'd, Hudhayfah ibn al-Yaman, Ubada ibn as-Samit, Hisham ibn al-A'as, Abu Huraira and Ikrimah ibn Abi Jahl. As it was a citizen army, in contrast to a mercenary army, the age of the soldiers ranged from 20 (in the case of Khalid's son) to 70 (in the case of Ammar). Three of the ten companions promised paradise by Muhammad, namely Sa'id, Zubayr and Abu Ubaidah, were present at Yarmuk.