مسائل المنتخبه (Articles Of Islamic Acts) - الخوئي، السيد أبوالقاسم - الصفحة ٢١ - (III) SEMEN

(v) BLOOD
٩٧. The blood of a human being and of every animal whose blood gushes out when its great artery is cut is impure. The blood of a fish or a mosquito is pure becauseit does not gush.
٩٨. If an animal whose meat is lawful to eat is slaughtered in accordance with the method prescribed by religious law and its blood comes out in the usual quantity,the blood, which is still left in its body is pure. However, the blood which goes back into the body of the animal owing to its inhaling its breath, or on account of its headhaving been at a higher level at the time of its slaughtering, is impure.
٩٩. If there is the slightest quantity of blood m the egg of a hen its we should be avoided m accordance with obligatory precaution. However, if the blood is m theyolk (yellow portion) of the egg its albumen (white portion) will be pure unless the veil lying between the yolk and the albumen is torn.
١٠٠. The blood which is sometimes seen while milking an animal is impure and makes the milk impure.
١٠١. If the blood, which comes from inside the teeth disappears on account of its being mixed with the saliva, it is not necessary to avoid the saliva.
١٠٢. If the blood, which dries under the nail or skin on account of hurt, assumes such a shape that it can no longer be called blood it is pure; but if it is calledblood it is impure. And m case a hole appears m the nail or the skin and it is difficult to take out blood and to purify that spot for the purpose of ablutions or ceremonialbath one should perform tayammum. (See Article - ٧٠٨).
١٠٣. If a person does not know whether blood has dried under the skin or the flesh has assumed such a shape owing to hurt, it is pure.
١٠٤. If even a particle of blood falls m the food while it is being cooked the entire food together with its container becomes impure, and boiling, heat or firecannot purify it.