The Eid prayer is one where the imam attends and leads the people in praying two rak' ahs. ' Umar (may Allaah be pleased with him) said: " The prayer of al-Fitr is two rak' ahs and the prayer of
al-Adha is two rak' ahs, complete and not shortened, on the tongue of your Prophet, and the one who fabricates lies is doomed." Narrated by al-Nasaa' i, 1420 and Ibn Khuzaymah. Classed as saheeh by al-Albaani in Saheeh al-Nasaa'i.
It was narrated that Abu Sa'eed said: The Messenger of Allaah SAWS (peace and blessings of Allaah be upon him) used to come out on the day of al-Fitr and al-Adha to the prayer place, and the first thing he would do was to offer the prayer. Narrated by al-Bukhaari, 956