حَدَّثَنَا أَسْوَدُ بْنُ عَامِرٍ حَدَّثَنَا إِسْرَائِيلُ عَنْ جَابِرٍ عَنْ عَبْدِ اللَّهِ بْنِ نُجَيٍّ عَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ قَالَ نَهَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنْ يُضَحَّى بِعَضْبَاءِ الْقَرْنِ وَالْأُذُنِ
مسند امام احمد بن حنبل · Hadith 864
It was narrated that 'Ali (RA) said: The Messenger of Allah (PBUH) forbade offering an animal that has lost a horn or ear as a sacrifice.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020