Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) says: I attended Eid with the Messenger of Allah (peace and blessings be upon him), and with Sayyiduna Abu Bakr, Sayyiduna Umar, and Sayyiduna Uthman (may Allah be pleased with them); all of them performed the prayer before the sermon without any adhan or iqamah.
Hadith Referenceالفتح الربانی / أبواب العيدين * وما يتعلق بهما من صلاة وغيرها / 2848