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8

As far as I know there are currently no rabbis who are actively involved in legislating rabbinc-level laws. Those laws were set in stone centuries ago. As DoubleAA mentioned in the comments on your question, rabbinic laws could theoretically be repealed by a court under certain circumstances; however, there is not currently a court as great as the Sanhedrin ...


7

Orthodox Jews live their lives based on rules explained/instituted by great Rabbis many years ago. Throughout the generations many learned people have continued to interpret and apply those laws. While in theory anyone could say anything they want today, people would only listen if you are learned, serious and respect precedent. While nowadays there is no ...


5

THIS JUST IN: According to Orchos Shabbos chapter 9 siff 13, one must warn their chinuch aged child not to use building blocks such as Lego or the like to build a house or anything which has an Ohel of a tefach by a tefach if they are going to be using the space inside of it. And if they make this edifice it is not allowed to dismantle it. This is after ...


4

This is answered directly by Rambam in his introduction to the Mishna Torah. This authority to make new laws was taught directly by Moshe Rabbeinu as cited below from Deuteronomy 17:11. "The mitzvot given to Moses at Mount Sinai were all given together with their explanations, as implied by [Exodus 24:12]: "And I will give you the tablets of stone, the ...


4

The comments, above, approach the correct analysis. This question is discussed in detail in Talmud Shabbat 23a, near the middle of the page (as seen in the Sefaria site). There is a statement that says that one makes the blessing "Who has sanctified us with His commandments and commanded us to light the Chanukah light." It is a given that Chanukah, itself,...


4

It depends on the circumstances. Obviously, n'darim in general are a matter of biblical law: they're mentioned in the Tora. Yad, N'darim 1:4. On the other hand, some rules were established by the rabbis as safeguards against violating biblical laws of n'darim. Ibid., :27.


3

Shokhet cites Sh'miras Shabas K'hilchasah as saying that, to save a life on Shabas, if there is no difference in speed or quality of care, that one should choose to do a rabbinically prohibited action, instead of one that is Biblically prohibited. (Note the "if there is no difference". Otherwise, saving a life takes priority.) Note that, as Daniel ...


3

According to the answer at Frumtoronto.com Rabbi A Bartfeld quoting Rabbi Shlomo Miller compares it to Lego and says that it is permitted.


3

To add to Michael Bloch's important points regarding purchasing t'fillin from a reliable seller and borrowing t'fillin for use in the meanwhile: I'd advise you to CYLOR, but it seems from the Mishna B'rura (32:172) and his extended discussion in Bei'ur Halacha on 32:38 (s.v.v. "יעשה" and "מעור אחד") that one can rely on the lenient opinions regarding p'...


3

There are two issues at play here. First is whether the tfilin are kosher now. Second is how they will keep over time. On the second, it is clear that pshutim don't hold very well over time and for sure not as well as gassot which can last dozens of years when well maintained. On the first issue, whether pshutim are kosher at the moment you buy depends who ...


2

This authortiy only exists in legislating gezeiros, ie laws legislated to protect the accidental violation of a deOraisa whether through error or habit. (And, the Taz adds, if the mitzvah will still usually be performed.) Such as not blowing shofar when Rosh haShanah is on Shabbos so as to avoid the possibility that someone caught up in finding someone to ...


2

In all the examples in your question, Tosafot points to the Gemara in Yavomat 89b which brings various examples and counter examples. But at no point does the Gemara seem to bring a Pasuk to support the concept. 2 conclusions of that Gemara - and an answer to your question: Their power comes - in monetary issues - from the ability of Beth Din to disown ...


2

Besides for all the other good answers, there's another issue, mentioned by the Ramban in וָאֶתְחַנַּן - Devarim 4:2 on the Passuk forbidding one to add or subtract Mitzvoth - לֹא תֹסִפוּ עַל הַדָּבָר אֲשֶׁר אָנֹכִי מְצַוֶּה אֶתְכֶם וְלֹא תִגְרְעוּ מִמֶּנּוּ When discussing how to deal with Rabbinical additions, the Ramban states: ומה שתקנו חכמים משום ...


2

There is a dispute as to whether a rabbinic prohibition or mitzvah has the same metaphysical import as a Torah one, or whether it's pragmatic. Rav Meir Simchah haKohein miDvinsk (Meshekh Chokhmah, Devarim 17:11) holds that Torahitic prohibition describes something that is inherently wrong. The universe is made such that combining meat and milk is a problem (...


2

As noted in comments, gezeira d'rabba seems to be only an issue when there is an irregular mitzva involving a specialized skill that requires a certain amount of expertise, and that involves a special, carriable object. There is no mitzvah, neither d'rabanan nor d'orayta, that fulfills this criterion on the leil seder, which instead involves retelling the ...


1

The simple answer is that inasmuch as the pre-bedikah washing is for the purpose of cleanliness as apposed to leisure, in is not a violation of the prohibition of "rechitzah".Rambam


1

Rabbi Dovid Kviat, author of Succas Dovid on shas, would ask this question in his drashos. He answered that all the other mitzvos for all other holidays are simply acts which must be performed at their proper time, namely that particular holiday. As such Chazzal were able to enact a safekeep to not perform that act without interfering with the actual ...


1

In a related question, I cited a very interesting article by Dr Eli Turkel in Tradition (The nature and limitations of rabbinic authority). He writes there (pp. 83-84) […] community leaders only have religious authority if they are followed by a majority of the community […] In modern times, no single organization is accepted as authoritative by al ...


1

Perhaps Abba ben Joseph bar Ḥama (c. 280 – 352 CE), aka Rava (in Eiruvin 21b): מאי דכתיב (קהלת יב, יב) ויותר מהמה בני הזהר עשות ספרים הרבה וגו' בני הזהר בדברי סופרים יותר מדברי תורה שדברי תורה יש בהן עשה ולא תעשה ודברי סופרים כל העובר על דברי סופרים חייב מיתה שמא תאמר אם יש בהן ממש מפני מה לא נכתבו אמר קרא עשות ספרים הרבה אין קץ What does it mean ...


1

Disclaimer: I was mechadeish this p'shat based on the sources mentioned below. If you can find this p'shat somewhere, that would be amazing, but I have not seen this explanation anywhere. If you don't like it, feel free to disagree. The Ramban (to Devarim 4:2) says, and I'm paraphrasing here, that the issue of Bal Tosif is that you can't add a Mitzvah and ...


1

You might be referring to the concept of דברי סופרים צריכים חיזוק. This means that we are more stringent with regard to rabbinic laws. This would sound as a direct contradiction to the famous rule that we don't mage a Gezeira to a Gezeira. To answer this we must understand the idea of not making a Gezeira for a Gezeira (a fence of a fence) and Safek ...


1

When she's mentioned in M. Sukka, her husband is NOT. B"SD I think he was not alive during that incident recorded there (especially when they are discussing matters of education & her husband is not at all addressed).


1

I understand that BS says that is an Issur Mar'it Ha'ayn of an Issur derabanan, that the Nochri is a Shaliach of the Israel. If the Nochri's house is not far, so in 100% people know, and will see the Nochri carries the loading of the Israel Shabboth Davka. Mar'it Haayn is not the same as Gzera. Mar'it Haayn from Issur Derabanan is not Gzera Ligzera. The ...



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