Muhammad bin Sirin (may Allah have mercy on him) said: I asked Sayyiduna Ibn Umar (may Allah be pleased with them both) about the sacrifice (udhiyah): "Is it obligatory?" He said: "The Messenger of Allah (peace and blessings be upon him) offered a sacrifice, and the Muslims after him (also) offered sacrifices."
No one other than Isma'il bin Ayyash (may Allah have mercy on him) narrated this hadith from Ibn Awn (may Allah have mercy on him).
Hadith Referenceالمعجم الأوسط / باب الميم / 6268
Hadith Takhrij«أخرجه الترمذي فى «جامعه» برقم: 1506، وابن ماجه فى «سننه» برقم: 3124 (م)، 3124، والطبراني فى «الكبير» برقم: 13991»