Issue 111: If the blood of a human being or of an animal whose blood gushes forth when its large vein is cut, is transferred to the body of an animal whose blood does not gush out forth when its large vein is cut, and thus it is considered as the latter animal’s blood, it will be pure. This is referred to as transfer. So, when a leech sucks the blood of a human being, because it is not considered as the blood of the leech itself, and is accounted the blood of the human being, the blood will be impure.

Issue 112: If one kills a mosquito sitting on their body and blood comes out of its body, the blood will be pure if they are not sure whether it is their blood or the mosquito’s, and so is the blood if they know that the blood is theirs but now it is considered part of the mosquito’s body. But if the gap between the mosquito’s sucking and its being killed is so short that it is accounted the blood of that person, or if it is not certain whether it is that person’s or the mosquito’s, it will be impure.

Q113: Is an organ which is transplanted from someone into someone else pure? If impure, what is the verdict on praying with it?

A: If it is commonly considered as a part of the body, because after connecting, it joins the body, then it is treated as other parts of the body.