The Book of ad-Dahaya (Sacrifices)
43/9. Chapter:
An Animal With Its Ears Slit From The Back
Sunan an-Nasai
أَخْبَرَنَا أَبُو دَاوُدَ، قَالَ حَدَّثَنَا الْحَسَنُ بْنُ مُحَمَّدِ بْنِ أَعْيَنَ، قَالَ حَدَّثَنَا زُهَيْرٌ، قَالَ حَدَّثَنَا أَبُو إِسْحَاقَ، عَنْ شُرَيْحِ بْنِ النُّعْمَانِ، - قَالَ أَبُو إِسْحَاقَ وَكَانَ رَجُلَ صِدْقٍ - عَنْ عَلِيٍّ، رضى الله عنه قَالَ أَمَرَنَا رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ نَسْتَشْرِفَ الْعَيْنَ وَالأُذُنَ وَأَنْ لاَ نُضَحِّيَ بِعَوْرَاءَ وَلاَ مُقَابَلَةٍ وَلاَ مُدَابَرَةٍ وَلاَ شَرْقَاءَ وَلاَ خَرْقَاءَ .
It was narrated that 'Ali said: "The Messenger of Allah commanded us to examine the eyes and ears (of animals) and not to Sacrifice and animal with a bad eye, nor an animal with its ears slit from the front, nor an animals with its ears slit form the back, nor an animal with a round hole in its ear.
Reference : Sunan an-Nasa'i 4373In-book reference : Book 43, Hadith 13English translation : Vol. 5, Book 43, Hadith 4378