(Imām Bukhārī narrates): Ibrahim bin al-Mundhir narrated to us, he said: Anas narrated to us from Ubaidullah from Nafi' from Abdullah bin Umar, that
the Messenger of Allāh ﷺ used to pray the Eid al-Adha and Eid al-Fitr prayer, then he would give the sermon after the prayer.
Reference: Sahih Al Bukhari 957