It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that he used to offer the sacrifice at the Eidgah on the tenth of Dhul-Hijjah and used to say that the Prophet (peace and blessings of Allah be upon him) also used to do the same.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 5876
Hadith Gradingحکم دارالسلام:حديث صحيح، خ: 982، وهذا إسناد حسن من أجل أسامة.