Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
abudawud:2806Musaddad > Yaḥyá > Hishām > Qatādah > Lisaʿīd b. al-Musayyab Mā al-Aʿḍab

I asked Sa'id b. al-Musayyab: What is meant by animal with a slit ear and broken horn ? He replied: Half and more than half.  

أبو داود:٢٨٠٦حَدَّثَنَا مُسَدَّدٌ حَدَّثَنَا يَحْيَى حَدَّثَنَا هِشَامٌ عَنْ قَتَادَةَ قَالَ قُلْتُ لِسَعِيدِ بْنِ الْمُسَيَّبِ مَا الأَعْضَبُ قَالَ

النِّصْفُ فَمَا فَوْقَهُ