by an equivalent, whereas a non-fungible item is indemnified according to its value.” This is based on the Prophet’s saying, may Allah’s peace and blessings be upon him: “A vessel for a vessel, and food for food,” in a well-known incident. He was with one of his wives when another wife sent her servant with food in a dish. The servant entered, bringing the food and dish to the Messenger of Allah, may Allah’s peace and blessings be upon him, in the home of the other wife. Overcome by jealousy, she struck the servant’s hand, causing the dish to fall and break. The Prophet, may Allah’s peace and blessings be upon him, then took the food and dish of the wife in whose home he was and gave them to the servant, saying: “A vessel for a vessel, and food for food.” (1) Thus, compensation here was made with an equivalent, because this was a fungible item.
But regarding emancipation, when the Messenger, may Allah’s peace and blessings be upon him, explained that whoever emancipates his share in a slave, his emancipation extends to the shares of his partners, he said: “Its fair value is assessed against him.” (2) Thus, he required payment of its value, because it is not fungible: an equivalent cannot be obtained for it, so it is a non-fungible item.
The difference between a non-fungible item and a fungible item is that the jurists define a fungible item as “everything measured by volume or weight, which has undergone no permissible manufacture, and for which a forward sale is valid.” This definition restricts fungible items very severely.
Their statement, “everything measured by volume or weight,” excludes everything else, despite