مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٤١ - PURIFYING THINGS

called "grape juice" and it boils it is lawful to drink it.
٢٠٧. If one grape falls in something which is boiling and boils, but does not get dissolved in it, eating of only that grape is unlawful.
٢٠٨. If juice of grapes is being cooked in several pots it is permissible to use the same spoon for the pot which has not boiled and for the pot which has boiled.
٢٠٩. A thing, about which it is not known whether it consists of the juice of unripe grapes or of ripe grapes, is lawful if it boils.

Vl. TRANSFER (INTIQAL)
٢١٠. If the blood of a human being or of an animal, whose blood gushes out when its great artery is cut, is sucked by an animal (or an insect) whose blood does notgush and is treated to be the blood of the latter animal, it becomes pure. This process is called Intiqal. The above order also applies to other impurities, but since theblood of a human being, sucked by a leech, is not considered to be the blood of the leech, and is treated to be the blood of a human being, it is impure.
٢١١. If one kills a mosquito sitting on ones body and blood comes out of the body of the mosquito, but it cannot be said whether that blood is the blood of themosquito itself or the blood which it had sucked from ones body, that blood is pure. The same order applies if it is known that it is the same blood which the mosquito sucked from the body of the human being but is treated to be its own blood (i.e. it is pure). But that blood will be treated to be impure if the gap between the mosquitos sucking the blood and its being killed is so short that it is treated to be the blood of the human being, or if it is not possible to decide whether it is the blood of the mosquito or of the human being.