What is the ruling concerning animals with flowing blood whose carcass is not permissible to consume, excluding humans?
Chapter on what purification is achieved with regarding water
Al-Mughni
Book of Purification
Primary text
This category includes edible land animals and sea creatures that can live on land, such as frogs and crocodiles. All such animals become impure upon death and render a small amount of water impure if they die in it, or a large amount of water if they alter it. This is the position held by Ibn al-Mubarak, Al-Shafi'i, and Abu Yusuf.
Supporting text
Malik, Abu Hanifa, and Muhammad ibn al-Hasan stated that if a frog dies in water, it does not spoil the water because it lives in water, resembling fish. The primary argument against this view is that since it defiles other things, it must defile the water, like a land animal. Furthermore, it possesses flowing blood and its carcass is unlawful, thus it resembles water birds, unlike fish which are permissible and do not defile other substances.