Sacrifice (Kitab Al-Dahaya)
Dawud :: Book 15 : Hadith 2798
Narrated Ali ibn AbuTalib:
The Apostle of Allah (peace_be_upon_him) enjoined upon us to pay great attention to the eye and both ears, and not to sacrifice a one-eyed animal, and an animal with a slit which leaves something hanging at the front or back of the ear, or with a lengthwise slit with a perforation in the ear. I asked AbuIshaq: Did he mention an animal with broken horns and uprooted ears? He said: No.