I asked al-Bara' ibn Azib: What should be avoided in sacrificial animals? He said: The Messenger of Allah ﷺ stood among us, and my fingers are smaller than his fingers, and my fingertips are smaller than his fingertips. He said (pointing with his fingers): Four (types of animals) should be avoided in sacrifice: A One-eyed animal which has obviously lost the sight of one eye, a sick animal which is obviously sick, a lame animal which obviously limps and an animal with a broken leg with no marrow. I also detest an animal which has defective teeth. He said: Leave what you detest, but do not make it illegal for anyone. Abu Dawud said: (By a lean animal mean) and animal which has no marrow.
قَامَ فِينَا رَسُولُ اللَّهِ ﷺ وَأَصَابِعِي أَقْصَرُ مِنْ أَصَابِعِهِ وَأَنَامِلِي أَقْصَرُ مِنْ أَنَامِلِهِ فَقَالَ أَرْبَعٌ لاَ تَجُوزُ فِي الأَضَاحِي الْعَوْرَاءُ بَيِّنٌ عَوَرُهَا وَالْمَرِيضَةُ بَيِّنٌ مَرَضُهَا وَالْعَرْجَاءُ بَيِّنٌ ظَلْعُهَا وَالْكَسِيرُ الَّتِي لاَ تَنْقَى قَالَ قُلْتُ فَإِنِّي أَكْرَهُ أَنْ يَكُونَ فِي السِّنِّ نَقْصٌ قَالَ مَا كَرِهْتَ فَدَعْهُ وَلاَ تُحَرِّمْهُ عَلَى أَحَدٍ