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15

My best guess is that it's the policy of the kosher dining hall to not allow outside food or drink to cut down on the amount of non-kosher food which comes in. To my knowledge, there's nothing wrong with water or water bottles (even when in the possession of a non-Jew) and that the person who told you that it was not permitted to bring the water bottle in ...


14

The Shulchan Aruch (OC 40:8) rules that אכילת עראי temporary eating is permitted while wearing Tefillin. Drinking water would seem to fall in this category.


14

Ibn Ezra said that only the above ground water (such as in the river) turned to blood, but water that was underground before the plague stayed water. "And all of Egypt dug around the river to find water to drink" (7:24) Thus , when the Egyptian magicians needed water to emulate the plague, they dug a new well See Ibn Ezra on Vaeira 7:22 ויש שואלים: ...


12

Dr. Leiman writes on the mouse that is 'half-mouse-half-earth" that, (p.452): "... it comes as no surprise that the rabbis discussed the status of a creature they had never seen, and one that modern scholarship would label as imaginary. The greatest scientists and historians of their day took its existence for granted. If so, its halakhic status needed to ...


11

Regarding #1: If it is likely to melt, I assume it would be a problem using this to begin with, as the walls are not steady. Not sure what you mean here. If the walls don't sway in the wind, then they are halachically steady. (And see #3) Regarding #2: What if there is a high likelihood of heavy snow on a nearly daily basis. Enough snow to cover the ...


10

The Talmud (Sotah 18a) records the following question: בעי רבא: השקה בסיב, מהו? בשפופרת, מהו? דרך שתיה בכך, או אין דרך שתיה בכך? תיקו.‏ Rava asked: If they had her drink [the waters] through a tube, what is the ruling? through a reed, what is the ruling? Is that the manner of drinking or it is not the manner of drinking? The matter remained ...


10

Without being able to ask the staff who sets the standards for your "kosher cafeteria", we can only speculate if it was truly not allowed to bring a water bottle in, or why. However, this is my best guess based on what you described and based on my experience with kosher supervisors in the past. If someone is allowed to bring in foreign food into the ...


9

The following explanation is in a footnote at torah.org 22 For unknown reasons, Tosfos, Moed Katan 11a (quoted by Reb Akiva Eiger Y.D. 116 and by Kaf ha-Chayim 170:79), advises against drinking water [or soda] after fish. She'arim Metzuyanim B'halachah 33:2 (2) suggests that for this reason whiskey - and not water - is customarily drunk between ...


9

R. Yitzchak Abadi has told me that it's no problem, at any point in the prayers. There is also no need to make a shehakol if one is drinking the water for the sole purpose of lubricating one's throat. Shehakol is only recited on water when the drinking serves the purpose of quenching one's thirst (see Shulchan Aruch OC 204:7).


9

Water is explicitly mentioned as problematic in the Talmud. Bechorot 44b אמר רבי אבא בריה דרבי חייא בר אבא משתינין מים בפני רבים ואין שותין מים בפני רבים ותניא נמי הכי משתינין מים בפני רבים ואין שותין מים בפני רבים R. Abba b. R. Hiyya b. Abba reported in the name of R. Johanan: It is permitted to urinate in public, whereas it is not permitted to drink water ...


8

As Ephraim already mentioned, HaRav Menashe Klein discusses this in משנה הלכות חלק ב. He brings a Chazon Ish in חידושי חזו"א מקואות תנינא סי' יו"ד ס"ק י"א which talks about using condensed steam for a Mikva. The Chazon Ish says it should have the same status as melted ice and it definitely doesn't make the Mikve Pasul, even if the condensation dripped in ...


8

The Shir Maon writes they turned blood into "water" (looked like it) and then turned it back into its original state which is blood. Magic cannot work on water (see Sanhedrin) but could on blood.


8

R. Yosef Bekhor Shor (Tosafist) uses this as a proof that the water only turned into blood for long enough to kill the fish, then the fish polluted the water rendering it undrinkable. He is in turn quoted by Hizkuni, Moshav Z'keinim, Riva al Hatorah, and others. This is the wording of Hizkuni (Exod. 7:20): לא נעשה היאור דם כי אם לפי שעה ומיד מתה הדגה ...


8

Sefer Otzar Palos HaTorah pg.161 brings down that no birkas hanehenin is said on Sotah water since it has a bad flavor. Rav Chaim Kaniefsky rules that one does not make a birkas hamitzvah on Sotah water. He brings a proof from Berachos 51b which says "one does not make a bracha on calamities". It is also noted that the Sotah who knows that she is ...


8

Yechave Da'as 1:30 rules that one may make ice cubes on Shabbos Shmiras Shabbos K'hilchoso 10:5 footnote 15 in the name of the Tchbiner Rav says it is forbidden because of Nolad, however in 10:4 footnote 14 mentions that others permit it. However even according to those that permit making ice on Shabbos, one may only make ice if it will be used on that ...


8

The OU says water does not need supervision. My guess is that it is not expensive to obtain the hekhsher and perceived as adding value so the manufacturers do it anyway. Aish has a nice explanation for why manufactured products are really more complex than we think and even "simple products" need to be supervised. It says regarding water In the U.S., ...


8

R Aryeh Kaplan in his beautiful book Waters of Eden (also part of his Anthology vol. 2) writes this is a chok and cites Bamidbar Rabbah 19:8 By your lives, a dead person doesn't make things impure, and the water doesn't make things pure. Rather, God said: I have engraved a rule, I have decreed a decree (chukah chakakti, gezeira gazarti), and you ...


7

It's important to notice that there IS a verse for Miriam in the Hoshanos that we all said (or mumbled) just a day before Tefillas Geshem, and we must remember that Tefillas Geshem and Hoshanos were written by the same author, R' Elazar Hakalir. So clearly R' Elazar Hakalir valued Miriam's role as it relates to water and mentioned it in our prayers for water,...


7

Yerushalmi Terumot 11:2 states: רבי יוחנן בשם ר"ש בן יוחאי אם יאמר לך אדם שמנה משקין הן אמור לו הרי טל ומים מין אחד הן ומנו אותן חכמים שנים:‏ Rabbi Yochanan [said] in the name of R Shimon ben Yochai: if someone tells you there are 8 liquids [which can cause fruit to be susceptible to impurity], tell him that dew and water which are one thing, yet ...


7

Another name for it is Isarusa Dilesato אתערותא דלתתא, An arousal of below. It's when we work hard to achieve an inspiration to connect with and serve Hashem. It's called מים נוקבין mayim nukvin because the giver (Hashem) in chassidus is considered male and the recipient (us) is considered female. Our אתערותא דלתתא can cause an אתערותא דלעילה, also called ...


7

It's a machlokes haposkim - see Rema, Orach Chaim 452:5, citing Orchos Chaim. The Ramban says it's no good, while the Rashba allows it. So the Rema says that it shouldn't be done, but bedieved (after the fact) it's okay. (An article at OU Kosher mentions, among other things, the relevance of this to the kashering of chocolate-manufacturing equipment, where ...


6

כל המנחות נילושות בפושרין, ומשמרן שלא יחמיצו. "All the menahoth are kneaded with lukewarm water..." מנחות ה,ב, Tractate Menahoth 5:2 This is codified in the Rambam as well (מעשי הקרבנות יב:כא): כל המנחות הנאפות נילושות בפושרין ומשמרן שלא יחמיצו. הואיל ולישתן ואפייתן בפנים בעזרה אנשי פנים זריזין הן:


6

Drinking water in order to swallow a pill is basically the same case as drinking water in order swallow down food which is stuck in your throat (Shulchan Aruch, Orach Chaim 204:7). The m'chaber states there that no blessing - before or after - is to be said on the water. The Mishna Berurah 204(42) there explains there that this is only the law for water ...


6

The water that the ashes of the parah adumah are placed in must be drawn by a person from a body of water using a vessel. (Rambam Hilchos Para Adumah 6:1-8).


6

There is a teshuvah from Rav Shlomo Zalman Aurbach quoted here which says that since the Gemara's examples of animals that we make the bracha on are land animals, we do not make it on sea creatures. If one saw a land animal while submerged in water your question would still apply.


6

See Halachipedia: Water that is fit for Mayim Achronim: One shouldn’t use scalding hot water, rather lukewarm water is permitted and it preferable to use cold water. Hot water that cooled is also permitted. Bitter, dirty, or smelly water not fit for animals to drink is permitted. Saliva is unfit; if nothing is available is better than nothing. ...


6

From http://www.theyeshivaworld.com/weekly_torah.php?id=393 One may use a water cooler or water fountain (72) (even when it is plugged in) on Shabbos if he is lenient in regard to opening a refrigerator on Shabbos (even if the motor is off).(73) The same would apply to changing the water bottle on top of a water cooler on Shabbos. (74) (72) Horav Yisroel ...


6

Rav Eliyashiv (Vayishma Moshe p. 131) is quoted as holding that making ice on shabbat is assur because of boneh. (Footnote 175 brings the Dovev Meisharim 1:55 who holds it assur because of nolad. See also Tzitz Eliezer 6:34). Rav Ribiat in 39 Melochos brings in the notes (fn. 175, in dosh, among others) cites Sefer Hilchos Shabbas, which writes that he ...


6

One of the prominent poskim of the past generation, R. Dov Berish Weidenfeld, who was the Tshebiner Rav and author of Dovev Meisharim, ruled that freezing water to make ice cubes on Shabbos is not permitted due to the prohibition of molid (creating a new entity), or nolad (benefitting from something that came into existence on Shabbos). Other poskim argue ...


6

All sources are from Yeshiva.org.il's detailed article about this. Note that i am relying on them being correct -- i did not check them. As we said in the question, there are two possible issues: Is it being warmed directly by the sun or not? Does the cold water get cooked upon entering? It is most definitely a machloket about whether or not it can be ...


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