Qatadah (may Allah have mercy on him) narrates that I heard Sayyiduna Anas (may Allah be pleased with him) saying. Imam Shu’bah says: I asked, “Did you hear this hadith from Sayyiduna Anas (may Allah be pleased with him)?” He replied, “Yes, the Messenger of Allah (peace and blessings be upon him) used to perform the sacrifice.” A narration similar to the above was reported.
Hadith Referenceصحيح ابن خزيمه / جماع أبواب ذكر أفعال اختلف الناس فى إباحته للمحرم، نصت سنة النبى صلى الله عليه وسلم أو دلت على إباحتها / 2896