In al-Mu'jam al-Awsat this is transmitted from Sayyiduna Abu Rafi' (may Allah be pleased with him); he states: The Prophet (peace and blessings be upon him) sacrificed a ram and then said: "This is on my behalf and on behalf of my Ummah." Tabarani recorded a similar narration in al-Mu'jam al-Kabir. The chain of Ahmad and al-Bazzar is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الأضاحي / 5968
Hadith Gradingمحدثین:إسنادہ حسن
Hadith Takhrij«اخرجه الطبراني فى المعجم الاوسط (246)»