Rambam - 1 Chapter a Day
Tum'at Met - Chapter 15
Tum'at Met - Chapter 15
Whose minimal measure is a handbreadth, as stated in Chapter 14, Halachah 1.
Examples of such substances are given throughout this chapter. See Chapter 13 which discusses substances that intervene in the face of impurity when they serve as an ohel. From a comparison to this chapter, it is apparent that there are differences whether an intervening substances blocks an aperture or serves as an ohel.
Was, by contrast, his intent to be to move the object, the aperture would be considered as open. The fact that it is temporarily closed is of no consequence.
The Ra’avad (in his gloss to Halachah 3, as explained by Rav Yosef Corcus) maintains that although an object that one intends to move cannot reduce the size of a proper window, it can reduce the size of a whole the size of a handbreadth. The rationale is that a hole is not a planned part of the building. Hence even a temporary obstruction is considered as reducing its size.
See Hilchot Tum’at Ochalin 1:1.
Since it is attached to the ground, it is not susceptible to ritual impurity and thus should reduce the size of a window. Nevertheless, it does not for the reasons the Rambam proceeds to explain [see the Rambam’s Commentary to the Mishnah (Ohalot 13:6)].
The commentaries question why this qualification is necessary. Seemingly, if the figs are not fit to be eaten, they are no longer susceptible to ritual impurity, even if they had been exposed to water and made susceptible to ritual impurity.
This is speaking about an earthenware barrel which becomes impure only when impurity enters its inner space.
Because it has thorns (Bava Batra 19b).
Because then they can be considered as separate from their container.
Clothes of this size are not fit to contract impurity (Hilchot Keilim 22:21).
Hence they will not be moved.
If it was a pure animal, it could be slaughtered and used as food. Hence it is likely that it would be moved.
We are speaking about a limb or meat that has been dislodged from its place and will never be returned to it. Such a limb or meat would be susceptible to ritual impurity if it were exposed to water, but in this instance the limb or the meat had not been exposed to water (Meiri, Bava Batra 20a).
I.e., the gentile would not desire to partake of its meat.
Which is also lean and unfit to eat and bound so that it cannot fly away.
If a child would play with it, he would move it from its place.
Who can never become ritually impure.
If, however, he is not bound for this reason, it is likely that others will release him. Therefore, he is not considered as having been placed there permanently.
But not during the week, as will be explained.
See Hilchot Shabbat 25:6, Hilchot Milah 1:13. The rationale for this ruling is that Yevamot 80b states that a child born after only an eight month pregnancy will surely die. Therefore even though he is still alive, it is forbidden to carry him on the Sabbath. Such an infant is not susceptible to ritual impurity, because he is not considered as human.
Tosafot, Shabbat 135a, states that this ruling should no longer be followed. Certainly, this is true in the present generations when advances in medical technology have enabled the lives of many babies who would not have survived in previous generations to be saved. Indeed, at present, we are obligated to attempt to save the lives of all babies no matter when they were born, even if this involves performing forbidden labor on the Sabbath.
See Hilchot Tum’at Ochalin 1:22. Rashi, Bava Batra 20a, gives another reason: the snow and the like will melt and not remain in the window permanently and the water’s presence is dependent on the container which can become ritually impure.
An olive-sized portion imparts ritual impurity, as stated in Chapter 2, Halachot 1-2. If, however, it is not of that size, it is considered as pure. Hence, if the window is exactly a handbreadth in size, its presence can reduce its size.
An olive-sized portion of the meat of a dead animal imparts ritual impurity, as stated in Hilchot Sha’ar Avot HaTum’ah 1:1.
A piece of bone the size of a barley corn imparts ritual impurity, as stated in Chapter 2, Halachot 9-10. Anything less is considered as pure and can reduce the size of a window.
A piece of meat from a crawling animal the size of a lentil imparts ritual impurity, as stated in Hilchot Sha’ar Avot HaTum’ah 4:2.
Hence they will be left in the window and thus reduce its size.
As stated in Hilchot Ochalin 4:1, once they have been made susceptible to ritual impurity, foods can contract ritual impurity regardless of their size. They cannot impart impurity to other substances, however, unless they are the size of an olive.
Which impart impurity like an entire corpse (Chapter 2, Halachah 9).
This would be sufficient to reduce the size of a window under ordinary circumstances, as stated in Halachah 3.
Since they are of the same type of the entity that generates ritual impurity, they are considered as part of the same general entity as it [the Rambam’s Commentary to the Mishnah (Ohalot 13:6)].
Since the bone is too small to impart impurity and it is not of the same type as the entity imparting impurity, it can reduce the size of the window.
And thus ritually impure.
And thus is considered as if it were not present at all.
In Rav Kappach’s translation of the Rambam’s Commentary to the Mishnah (Ohalot 13:6), this is one of the meanings offered for the term kichi.
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