سنن أبي داود

Narrated Ali ibn AbuTalib:

The Messenger of Allah (ﷺ) 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. I said: 'What is the Muqabalah ?' He replied: 'It has been cut from the back of its ear.' I said: 'What about the Sharqa'? He replied: 'The ear has been split.' I said: 'What about the Kharqa'? He replied: 'A hole is made (in its ears) as a distinguishing mark.'"