The Messenger of Allah ﷺ addressed us on the Day of Sacrifice after the prayer.
حدثنا يحيى بن آدم حدثنا أبو الأحوص عن منصور عن الشعبي
خطبنا رسول الله ﷺ يوم النحر بعد الصلاة
Its isnad is sahih. Abu Ahwas is Salam bin Salim Hanafi, and he is trustworthy. The hadith has already appeared with similar wording at 11000.