15. Abu Ali al-Ash’ariy has narrated from Muhammad ibn ‘Abd al-Jabbar from Safwan ibn Yahya from ‘is ibn al-Qasim who has said the following: “This is about a man who buys an old animal whose front teeth have fallen, abu ‘Abd Allah , has said, ‘It is not harmful to offer it for sacrifice. If you buy it weak and found it fatty, it is sufficient but if you bought it weak and found it lean it is not sufficient.’” NOTE: In another Hadith it is said that the degree of weakness is measured by examining if there is any fat on its kidneys or not.