It was narrated from Jurayy bin Kulaib that he heard `Ali (رضي الله عنه) say: The Messenger of Allah (ﷺ) forbade sacrificing an animal that had lost most of its horn or ear, Qatadah said: I mentioned that to Sa`eed bin Al-Musayyab and he said: Yes, the one that has lost half or more of that.