It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that he said: "The Messenger of Allah (peace and blessings be upon him) sacrificed a ram that was horned, large-eyed and sturdy (a male)."
Hadith Referenceالمعجم الأوسط / باب الألف / 274
Hadith Takhrij«أخرجه عبد الرزاق فى «مصنفه» برقم: 8132، والطبراني فى «الكبير» برقم: 11577»