7-4 (The compiler of the book narrated) that his father - may God be pleased with him - narrated that Muhammad ibn Yahya al-Attar quoted on the authority of Muhammad ibn Ahmad, on the authority of Muhammad ibn Harun, on the authority of Abi Yahya al-Vaseti who through a chain of narrations linked it up to the Commander of the Faithful Imam Ali (MGB) who went to the butchers and admonished them against selling seven parts of sheep: The blood; the glands; the corners of the heart; the spleens; the bone marrow; the balls and the penis.” One of the butchers told him (MGB), ‘O Commander of the Faithful! The spleens and the liver are the same.’The Commander of the Faithful (MGB) told him, ‘O liar! You are lying! Bring me two bowls of water so that I may show you the difference between them.’ He brought two bowls of water. The Commander of the Faithful (MGB) took a liver and a spleen and put each one in one of the bowls of water. He (MGB) then squashed each one of them with his hand. The liver got squashed but no blood came out of it, but the spleen did not. There was a lot of blood in it which all came out into the water, and all that was left of it was the veins and the skin that was in it. Then the Commander of the Faithful (MGB) said, ‘This is the difference between the liver and the spleens. The first one is a form of meat, but the second one is just blood!’”