Musannaf Ibn Abi Shayba 3:3364

Waki’ narrated to us, from Sufyan, from Ash’ath ibn Abi al-Sha’tha’, from al-Aswad ibn Hilal, from Tha’labah ibn Zahdam al-Hanzali, that Abu Mas’ud al-Ansari stood up on the day of Eid and said: "Indeed, there is no prayer on this day until the Imam comes out."