Seif 1 One may slaughter with anything that is detached from the ground, whether slaughtering with a knife or a rock or a thin reed of a lake, or any of these that can cut. (one may slaughter).(These objects) must have a sharp edge, and cannot have a flaw.Regarding a knife that has one side that is bent and one side that is good, one must not slaughter with the good side from the outset, this was a parameter that was taken so as not to enable the slaughterer to come to use the bad side.If he does slaughter, because it was the good side that was used to slaughter, it is permissible.
Seif 2 If one slaughters with something connected to the ground, or a body, like a fingernail and a tooth connected to an animal, the slaughter is invalidated.Or something detached from the ground but that will end up connected to the ground, we don't slaughter, if one slaughters it is permitted, and even if it is nullified, as long as it is not rooted again after it is nullified.
Seif 3 If one cuts with a jaw of an animal that has sharp teeth and slaughters with it, his slaughter is invalidated. (because it is like a sickle). However with one tooth that is affixed to the jaw, if one slaughters (before the fact) it is permissible.
Seif 4 If someone inserts a knife into a wall, and passes it across the neck (of an animal) until it is slaughtered, it is permissible, provided that the animal's neck is below and the knife above, if the neck of the animal will be above the knife, it is possible that the animal will descend with the weight of its body [on the knife] and cut [its throat] without [it being brought back and forth]. This is not considered as being slaughtered ritually, Even if he says I am sure that it (the animal) didn’t trample (it neck) over it (the knife), the slaughter is invalidated, therefore, if it was a fowl, whether its neck is above the knife that is implanted or below it, the slaughter is acceptable.