The tag has no usage guidance.

learn more… | top users | synonyms

4
votes
3answers
146 views

Hitting of the rock (Chukas): why twice?

Why did Moshe hit the rock twice rather than once in Bamidbar 20:11?
4
votes
1answer
284 views

Why would spring water or mineral water need a kosher certification?

Nearly every popular U.S. brand of spring or mineral water that I've seen has a kosher certification symbol on the bottle. Amonng them are Perrier and Saratoga (mineral / sparkling) and Poland Spring ...
4
votes
1answer
87 views

Why is moisture a chatzizah for netilas yadayim?

Why is moisture a chatzizah for netilas yadayim? I guess you can say that the hands must be completely clean, but then why don't you have to wipe your hands in middle? For example, one who washes his ...
4
votes
3answers
262 views

Why put water into the havdallah wine?

I have seen people (mainly sefardim) put a few drops of water into the wine before havdallah. Why do they do this?
4
votes
3answers
225 views

Bottle of water for shaloch manos

Can water be counted as a drink for shalach manos ("sending portions" on Purim) or since it is mere water does it never count as a mana ("portion")? My question would apply to soda as well because ...
4
votes
1answer
89 views

Archeological finds related to King Hezekiah's closing a wellspring under Jerusalem?

The Gemara says that King Hezekiah (Chizkiyahu) closed one of the springs of water in (under?) Jerusalem, so the Assyrian army wouldn't be able to use it. Do we have any guesses what exactly that ...
4
votes
3answers
105 views

Why did God say יִקָּווּ הַמַּיִם, it should happen by itself naturally

In Bereishis 1:9 it says וַיֹּאמֶר אֱלֹהִים יִקָּווּ הַמַּיִם מִתַּחַת הַשָּׁמַיִם אֶל מָקוֹם אֶחָד וְתֵרָאֶה הַיַּבָּשָׁה , And God said, "Let the water that is beneath the heavens gather into one ...
4
votes
1answer
75 views

Why in the Temple were the meal offerings that were unleavened, kneaded with warm water?

The meal offerings in the Temple (that were unleavened – matzo) were kneaded with lukewarm water Rambam Maaseh Hakorbonos - Chapter 12 Halocho 21 despite the fact that this accelerates leavening. We ...
4
votes
1answer
53 views

Can hot tap water touching rainwater frozen by winter create a valid mikveh?

I'm considering building an outside mikveh, with the freshwater section above the rainwater section (with two holes between them, classical "bor al gabai bor" halachic design) but there is no ...
4
votes
1answer
81 views

Water Fasts and Halacha

Some spiritual disciplines have a concept of a "water fast" (see https://en.wikipedia.org/wiki/Water_fasting), during which one consumes only water, tea w/o sugar, etc. Clearly, consuming even water ...
4
votes
1answer
488 views

Water heaters on shabbos and yom tov

I was looking into buying a more efficient water heater, and was dismayed to discover the significant halachic issues surrounding tankless water heaters (http://www.star-k.org/kashrus/kk-...
4
votes
1answer
36 views

Was the rock the Moshe hit in Shemos 17 the be'er miriam

Rashi in Bamidbar 20:2 notes that until Miriam died the be'er [literally well] gave water. Was this be'er the rock which Moshe hit in Shemos 17? Or was it a well, and if so where is the first source ...
4
votes
1answer
616 views

Hot water tap at work

Many offices have a water dispenser (with hot water spout) or a hot water tap next to a sink. Is this hot tap Kosher? Assume for a moment that someone uses the tap to dispense hot water into a cup of ...
4
votes
2answers
119 views

How did the water climb so high?

The Gemara in Sota 34 says וכיון שניטבלו רגלי כהנים במים חזרו המים לאחוריהם שנאמר וכבוא נושאי הארון עד הירדן וגו' ויעמדו המים היורדים מלמעלה קמו נד אחד וכמה גובהן של מים שנים עשר מיל על שנים עשר ...
4
votes
3answers
112 views

Where do matza bakers find flour that's definitely never gotten wet?

Matzah sold as Shmurah means that Jews were present from the time of harvesting, making sure that the grain stayed dry and didn't become chametz, and intending for the purpose of the mitzva of matzah. ...
3
votes
3answers
452 views

Can one make ice on Shabbos?

Can one make ice on Shabbat? For example, putting water in an empty ice cube box and freezing it? I've heard it's a Machloket between the Rema and Shulchan Arukh. What are their opinions on making ...
3
votes
1answer
120 views

What is the significance of “mayim nukvin” according to chassidus

What is the spiritual significance of "Mayim Nukvin" (feminine waters) according to Chassidus? I have seen it plenty of times in Tanya and various Maamarim, but I never really understood the concept.
3
votes
1answer
465 views

Drinking from a water fountain on Shabbos

Often when drinking from a water fountain it causes the motor that makes the water cold to run. May one drink from it on Shabbos?
3
votes
1answer
44 views

Why singular “וְלֹא הָיָה מַיִם” in Bamidbar 20:2?

The word מַיִם is, as far as I know, pretty consistently grammatically plural in Chumash (and, incidentally, in more modern Hebrew also). That is, the adjectives that modify it are plural adjectives, ...
3
votes
1answer
213 views

Water left unopened

According to this article from the Kof-K one is obligated in covering water bottles, but we dont practice today as snakes are not common, but what if i lived in a desert like city, like Phoenix ...
3
votes
3answers
375 views

What's wrong with making coffee on Shabbat?

If, on Shabbat, someone pours water from a kli shlishi (which according to all opinions I'm aware of) over coffee beans which are laying on a filter is there any problem with drinking the resulting ...
3
votes
1answer
346 views

refilling a percolator on Yom Tov

Are you allowed to refill a percolator or hot water urn on Yom Tov?
3
votes
1answer
81 views

Can flowing water be used as walls for a sukkah?

Is it permissible to make a sukkah with walls made of flowing water (assuming that schach can be suspended over these 'walls')? Furthermore, would the water need to be 'continuous' or 'wall-like' (...
3
votes
1answer
160 views

how much water do you need for a Netilat Yadayim

When washing your hands for Netilat Yadayim, how much water do you need for Netilat Yadayim?
3
votes
1answer
131 views

How did the plague of blood work?

Here's what I know, based on my education in day school, about the plague of blood in Egypt. All water was turned to blood The only way for the Egyptians to get clean water was to purchase it from ...
3
votes
1answer
118 views

Hagalas kelim in “tzir”

When one wants to make celim (vessels) Kosher by purging non-Kosher absorbed tastes from it, one method is hagaleh, which normally is done with water. The Rema says in SA OC Siman 452:5 that b'dieved (...
3
votes
0answers
102 views

Can a magician cast a spell in water?

The power of magicians and magic, the Talmud speaks plenty about. One such example is that of Ze'iri and the donkey, in Sanhedrin 67: זעירי איקלע לאלכסנדריא של מצרים זבן חמרא כי מטא לאשקוייה מיא ...
3
votes
2answers
39 views

Hydroponics – Allowed on Seventh Year?

Would hydroponics be allowed in Israel on the seventh year, when there are additional restrictions on farming the land?
3
votes
2answers
64 views

Can someone help me understand Genesis Rabbah 4?

The beginning of Genesis Rabbah 4 talks mainly about the firmament in creation account. It goes as follows (from the Artscroll Mesorah publication): (4:2): "At the moment the Holy One, Blessed is He,...
2
votes
2answers
70 views

Is there any water in a korban minchah?

The Maharal (Gevuros Hashem, ch. 48) proves that matzah ashirah is considered matzah from the fact that the korban minchah is called matzah even though it is made with oil. But in the continuation of ...
2
votes
2answers
177 views

Yarden's River Name

Why is it called ירדן?
2
votes
1answer
165 views

Mikvah with three additional chambers

I was looking at documentation of a mikvah being constructed, and it confused me. In addition to the immersion pool, this mikvah had three additional chambers. From what I have gathered, they appear ...
2
votes
2answers
275 views

Using water filter/purification system on Shabbos

(Being asked as a theoretical question. Obviously everyone should ask their LOR.) There is a water filter (or purifier) that works in the following way: The water flows into a part where there is ...
2
votes
2answers
89 views

Why does fruit juice, when mixed with flour, not count as chametz, since it contains water?

How can mixing flour with fruit juice be permitted on Passover, since all fruit juice, even pure juice directly squeezed from fruit always contains water?. Water, H2O, is simply a chemical component ...
1
vote
1answer
181 views

May the Sotah take the bitter waters intravenously?

In Naso, we read (Bamidbar 5:32) that the kohen blots out the curses (which include Hashem's name) in the bitter waters and then gives for the woman to drink (5:24). What if the woman is unable to ...
1
vote
2answers
143 views

Why not dump the ashes of the para aduma into a huge body of water?

The way I understand it one of the reasons we no longer have the ashes of the para aduma to purify people is because they were used up. I'd like to know if it would have been theoretically possible ...
1
vote
1answer
73 views

Must ice cubes be designated meat or dairy and separated?

If I have a freezer each for meat and for dairy, can the ice from automatic ice cube maker in my meat freezer be used to cool dairy drinks?
1
vote
1answer
101 views

Can noisy fans and humidifiers be run on Shabbat in a home that has had a flood?

Talmud Shabbat 18a states that “It is forbidden to place grain in a water mill [on Erev Shabbat] unless it will be ground before nightfall. Why? Rabba said: Because it creates noise.”[10] ...
1
vote
1answer
127 views

What Bracha do we say on bread baked with evaporated mei peiros?

If one bakes bread made out of flour and pure fruit juice, it becomes pas haba bekisnin and the bracha is (at times) mezonos. What if one distilled fruit juice (to produce water) and baked bread out ...
1
vote
1answer
49 views

Why does the Chumash have to explain what “thirst” means?

In Parshat Eikev, Moshe recounts all the challenges of the time in the desert. In Devarim 8:15 we read, 15.Who led you through that great and awesome desert, [in which were] snakes, vipers and ...
1
vote
1answer
46 views

What's the difference between בְּמַיִם and בַּמַּיִם?

In Tanach, the noun מַיִם occasionally is prefixed with a ב־. When the noun is modified by an adjective, the word formed is בְּמַיִם, as in Bamidbar 24:7 "וְזַרְעוֹ בְּמַיִם רַבִּים", N'chemya 9:11 "...
1
vote
0answers
55 views

Shabbos on an Electric Well [closed]

My wife and kids dread Shabbos because it means flushing the toilet with 5-gallon buckets because we have an electric well. We flip off the circuit to the electric well just before candle lighting. ...
1
vote
0answers
64 views

For puposes of Tashlich, what is considered a “body of water”?

On the 1st day of Rosh Hashanna (if not Shabbat), customarily people go to a body of water for Tashlich. Does the water have to be there currently and must be a "natural" body of water? If so, what's ...
1
vote
0answers
28 views

what bracha do you make on seaweed and algae? [duplicate]

These two grow on the soil in the ocean. Is the term "adamah" applicable only to the dry land or does it apply to the land in the ocean as well? Note: I am referring to eating just the seaweed itself; ...
1
vote
0answers
137 views

Is playing with a water gun allowed

Is playing with a water gun for fun allowed or is it a problem of baal tashchis (wasting resources)? (assuming for adult playing with kids or with other adults) This is really a general question of ...
1
vote
0answers
85 views

Thirsty from before starting a bread meal, now wanting to drink in the middle of the meal

It says in Shulchan Aruch Orach Chaim Siman 174 Sif 7 that one doesn't make a bracha on water in the middle of a seudah (bread-based meal). Even if the person was thirsty from before the seudah (and ...
0
votes
2answers
188 views

Can you dry yourself on shabbos?

May one dry himself with a towel on shabbos after using the mikvah? If not, why not? If yes, why?
0
votes
2answers
65 views

Why do we refer to it as the Well of Miriam?

From what I understand the Well of Miriam in the dessert was actually a rock which miraculously brought forth water. As such why do we refer to it as the well of Miriam and not the Rock of Miriam?
0
votes
0answers
41 views

Maharil and Terumat haDeshen: Mayim Shelanu

Inspired by this question. I have heard a machloket in the names of the Maharil and the Terumat haDeshen about the source for mayim shelanu. While the details were given, the sources were not. The ...
0
votes
0answers
105 views

Mayim shelanu history?

The water used to bake Matzah must be mayim shelanu—water that had been drawn in the evening and left to cool overnight. What is the halachic background for this requirement?