Musannaf Ibn Abi Shayba 3:1169

Mu'tamir ibn Sulayman narrated to us, from al-Zubayr ibn Khirrit, from 'Abdullah ibn Shaqiq, from al-Ahnaf, who said: I prayed the morning prayer behind 'Umar, and he recited [Surah] Yunus and [Surah] Hud and the like of them.