Musnad Abu Ya'la al-Mawsili 49:3

Abu Bakr narrated to us, Ibn 'Uyaynah narrated to us, from Damrah bin Sa'id, who said: I heard 'Ubaydullah bin 'Abdullah bin 'Utbah saying: 'Umar went out on the day of an 'Eid, and he asked Abu Waqid al-Laythi: "With what did the Messenger of Allah (ﷺ) recite on this day?" He said: "With 'Qaf' (Surah Qaf) and 'Iqtarabat' (Surah al-Qamar)."