It is narrated from Ibn Umar (may Allah be pleased with them) that the Prophet (ﷺ), Abu Bakr, and Umar (may Allah be pleased with them) used to perform the Eid prayers before the sermon.
Hadith Referenceمسند الإمام الشافعي / كتاب العيدين والأضاحي والاستسقاء / 491
Hadith Takhrijصحیح من غیر ھذا الطریق، اخرجـہ احمد: 39/2، 108 ۔ والطبرانی فی الکبیر: 211/12 (13208)۔