Yunus bin Halbas said: I went out with Abu Sa'd al-Khayr (may Allah be pleased with him) to buy sacrificial animals. He pointed to a ram whose flesh was neither too much nor too little, and said: Buy this one, for it resembles the ram of the Messenger of Allah (peace and blessings be upon him).
Hadith Referenceالمعجم الكبير للطبراني / مسند من يعرف بالكنى / 18977