BACKGROUND TO THE DAILY DAF
Rosh Kollel: Rabbi Mordecai Kornfeld
[84a - 26 lines; 84b - 22 lines]
We recommend using the textual changes suggested by the Bach and the marginal notes of the Vilna Shas. This section is devoted to any other important corrections that Acharonim have pointed out in the Gemara, Rashi and Tosfos.
 Rashi 84a DH k'Mitah : ד"ה כמיטה
The words "umi'Tachteha Mekabeles" ומתחתיה מקבלת
should be "u'Metichusah Mekabeles" ומתחותה מקבלת
(This seems to be the correct Girsa. Since the carriage made like a bed is not completely tight (Matu'ach), it may be a receptacle for certain things, rendering it fit to receive Tum'ah. -M. KORNFELD)
 Rashi 84b DH Mi Lo Askinan : ד"ה מי לא אסקינן
The words "Kol Davar Tum'ah" כל דבר טומאה
Should be "Kol Davar Tamei" כל דבר טמא
1) [line 3] מדרס MIDRAS
(a) A Zav, a man who emits Zov two or three times, whether it is emitted in one day or in two or three consecutive days, is an Av ha'Tum'ah. Zov is a clear discharge with the appearance of the white of a sterile or spoiled egg, in contrast with semen, which has the consistency of fresh egg white. Zov can also be a pus-like discharge resembling the liquid from barley dough or soft barley batter.
(b) A Zav, like a Zavah, Nidah, or Yoledes, can cause objects that are under him to become Avos ha'Tum'ah whether he touches them or not. The objects become Tamei Midras (lit. an object that is treaded upon), otherwise known as Mishkav or Moshav ha'Zav (or the Tachton of a Zav). An object under a Zav becomes a Midras only if it was made for lying, sitting, or leaning upon. Earthenware objects (Klei Cheres) cannot become Midras.
(c) A person who touches or carries either a Midras or the Zav himself, along with the clothes he is wearing and other utensils (except for earthenware utensils) that he is touching at the time, get the status of Rishon l'Tum'ah.
(d) Utensils or clothes which lie above the Zav also get the status of a Rishon l'Tum'ah, whether they touches him or not. These are called the Elyon of a Zav.
2) [line 5] ואם יש בה בית קבול רמונים V'IM YESH BAH BEIS KIBUL RIMONIM - that is, if the box carriage for stone transport has a small container in it, it is Tamei - even though it is obviously very heavy when loaded with stones, and oxen must be employed to move it. (RITVA)
3) [line 6] שלש תיבות הן SHALOSH TEIVOS HEN - It is not clear why the Gemara brings this Mishnah here. It does not seem to be directly related to our Sugya. (TOSFOS DH Shalosh)
4) [line 8] הבאה במדה HA'BA'AH B'MIDAH - that which is larger than forty Se'ah
5) [last line] מפץ MAPATZ - a mat woven from reeds
6) [line 1] פכין קטנים PAKIN KETANIM - small flasks with a narrow neck
7) [line 5] רחמנא ליצלן מהאי דעתא RACHMANA LITZLAN ME'HAI DA'ATA - the Merciful One should save us from that (your) opinion!
8) [line 5] אדרבה! ADERABA! - just the opposite!
9) [line 12] צמיד פתיל TZAMID PASUL
If a k'Zayis from a corpse is in an Ohel (a space that is at least a Tefach by a Tefach square and a Tefach high), Tum'ah spreads out in all directions to fill the entire Ohel. Any metal vessels (covered or uncovered) or food and drink that are in the Ohel become Tamei. However, Klei Cheres become Tamei only when Tum'ah enters them. Therefore, when they are covered with a Tzamid Pasil (a tight seal) they do not become Tamei even if they are in the Ohel.
10) [line 15] ערוגה ARUGAH - a garden patch
11) [line 16] זרעונין ZER'ONIN - types of seeds (see Graphic #2)
12) [line 17] "כי כארץ תוציא צמחה, וכגנה זרועיה תצמיח" "KI CHA'ARETZ TOTZI TZIMCHAH, UCH'GANAH ZERU'EHA SATZMI'ACH" - "For as the earth brings forth her growth, and as the garden causes the things that are sown in it to sprout forth; [so HaSh-m Elokim will cause righteousness and praise to sprout forth before all the nations.]" (Yeshayah 61:11) - The Mishnah uses the unusual word "Zeru'eha" to learn the laws of a vegetable patch that may be planted with different types of vegetables.