Musannaf Ibn Abi Shayba 3:3349

Abu Bakr narrated to us, he said: Sufyan ibn 'Uyaynah narrated to us, he said: Hamzah ibn Sa'id narrated to us, he said: I heard 'Ubayd Allah ibn 'Abd Allah ibn 'Uyaynah saying: 'Umar went out on the day of 'Eid and asked Abu Waqid al-Laythi: "With what did the Messenger of Allah, may Allah bless him and grant him peace, recite on this day?" He said: "With 'Qaf' and 'Iqtarabat'."