It is narrated from Abu Humayd al-Ru'ayni (may Allah have mercy on him) that: We were sitting with Sayyiduna Utbah bin Abd al-Sulami (may Allah be pleased with him) when Yazid Dhu Misr al-Muqra'i came and said to Utbah: O Abu al-Walid, we just went out looking for a young goat for sacrifice, but we could hardly find anything with marrow in its bones, except that I found a fat goat with broken front teeth. Utbah said: Why did you not bring it to us? He said: Allah forgive me! Is it valid on your behalf and not valid on mine? He said: Yes; you are in doubt and I am not in doubt. Then Utbah put out his hand and said: The Messenger of Allah (peace and blessings be upon him) forbade only five: "Al-mu'salah, al-musfarah, al-bakhqa', al-kasra' and al-mushayyi'ah." He explained that mu'salah means an animal whose horn has been uprooted, musfarah one whose ear has been cut off from the root, bakhqa' one whose loss of an eye is evident, kasra' one whose bone is broken, and mushayyi'ah an extremely weak or sick animal that cannot keep up with the flock.