Hadith 1

when joined together, it would be like a roundabout that protects against lesions. If, on the one hand, the four include a small thing, and the thumb helps it to preserve it in the form of inclusion, the power of the thumb in controlling that thing equals the powers of the four, and the thumb, on the other hand, like a valve on what the palm grasps. And if it was not placed in its place, its benefit would be nullified, and if it was placed next to the pinkie, the two hands would not be facing each other while they meet to arrest it, and further from this if it was placed from behind or upon the palm. As for the nail, it is a soft bone that is permanently emerging because it is always crushed like a tooth, but it was created to be a support for the fingertips so that they do not bend and do not press when tightening on the thing, so that it weakens and so that the finger is able to catch small things and from scratching and ripping and to be a weapon at times, and this in a person other than the human being, is more apparent and is created with a rounded edge to cleave some things and cut with it what is easy to cut and soft so that it rests under what is sewn together so that it does not crack. As for the nature of the chest, its explanation is that the entire abdominal cavity, from the collarbone to the flank bone, is divided into two great cavities, one above containing the lung and heart, and the second below, containing the stomach, intestines, liver, spleen, gallbladder, kidneys, bladder and wombs, called the barrier. And this barrier takes from the head of the cranium and passes through a rib downward in one of the two sides until it connects to the vertebrae of the back at the twelfth vertebra and becomes a barrier between what is above it and what is below it. Then this upper cavity is divided into two parts, separated by another veil, and passes in the middle until it is also attached to the vertebral column. This entire upper cavity is called the chest, and its unit is from above the collarbones to the diaphragm that divides the abdomen in width. And the chest was created for the purpose of breathing, and that is because if it expanded, the lung was drawn and expanded, and if the lung was flattened, it would attract air from outside, and that was one of the two parts of breathing, which is the inhalation of air. Then the chest contracts and the lung contracts, and with its contraction, the breath is expelled, which is the second part. Rather, it was necessary to inhale the outgoing air and then expel it to recreate the heart, adjust its temperature, and supply the soul with an essence suitable for it. Air becomes a compound for the soul as an outlet for it, just as drinking water becomes a compound for food. If that air that was attracted, heated up, it needs to be expelled and replaced with it, so the chest contracts and the lung contracts, then it returns and expands and stretches the lung, and another air enters it, like the alley through which the fire was blown, for if it was flattened, it would be filled with air, then if it contracted, it would be deflated. As for the lung, its bronchus ends at the end of the mouth, as we mentioned, even if it comes to below the collarbone, it is divided into two parts, and each part of it is divided into many parts and is woven and stuffed around it with white, loose, rickety flesh whose food is blood of the gentlest and tenderness, which fills the trachea and the vulva. which is between its branches and the branches of the veins that are there, and it became from the sum of the divided veins and the veins under it. And the meat that surrounds the body of the lung and half of it is in the right chest cavity and the other is in the left. If an accident occurs to one of them, the other does what he needs, such as the case in the eyes, and it is covered by a nervous membrane to preserve it in its position an