The Rambam, or Maimonides, was a famous 12th century Rabbi, philosopher, and physician. He wrote the Mishneh Torah and the Moreh Nevuchim (Guide to the Perplexed).

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Making a siyum on a chelek of the Rambam

Is making a siyum on a chelek (section) of the Rambam good enough to absolve one from fasting taanis bechoros, or allowing one to eat meat during the nine days? I have never seen someone make a siyum ...
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PreRishonic sources against the tekhelet half-string

What are the classical (pre-rishonic) sources explicitly or implicitly against the view of the Rambam that the tekheleth string is only half-dyed?
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The pre-Maimonidean half-tekheleth string

Are there any sources prior to the Rambam that suggest (even implicitly) that the tekheleth string is only half-dyed?
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What are “secrets of Torah” according to the Rambam?

The Rambam explicitly acknowledges that there is something called "secrets of Torah." His words (or at least R' Kapach's translation of his words) are (Moreh Nevochim 2:33): שאי אפשר להכנס למעמד ...
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Is Rambam's opinion about Nidda and Zava cycle rejected?

There's a famous minority opinion of Rambam that, Biblically, the nidda and zava cycle is continuous--7-11-7-11-7 days ad infinitum, and that most Rishonim argue on him and hold the cycle is 7-11 days ...
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Rambam on color certainty of tekheleth

According to a questioner on this page, the Rambam in the Pirush HaMishna contradicts the Rambam in Hilchoth Tzitzith regarding whether we can dye tekheleth due to uncertainty about the color. Where ...
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Authorship of Summarized Sefer Hamitzvos

Are there any sources that claim that Rambam didnt author the summarized sefer hamitzvos (מנין מצות הקצר)?
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Illustrated hilchot Kiddush Hachodesh

I remember seeing about 20 years ago a beautiful annotated commentary on Rambam's hilchos kiddush hachodesh, with extensive illustrations and calculations, explained according to both ancient and ...
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34 views

Shem Yosef on Mishne Torah?

Who authored the Shem Yosef commentary on Rambam's Mishneh Torah? This work is featured on the online bar-ilan database.
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Did the Rambam write in response to the Ibn Ezra?

According to some interpretations (including, it seems, the explanations of Spinoza) the Ibn Ezra's commentary makes allusion to the idea that some of the Torah (beyond the talmudic discussion of the ...
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Why doesn't the Rambam mention the Brochah on Tevillas Keilim?

Why doesn't the Rambam mention the Brochah on Tevillas Keilim? Even if he holds its a Mitzve Drabanon (as this is subject to an argument), but by others he specifies the Brochah. So why is it ...
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Can I have sifrei kodesh in my bedroom?

Since I may be naked in my bedroom, is it possible to have sifrei kodesh in it (according to the Talmud or the Rambam)?
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Writings of R. Ovadiah Maimuni

Are any of the writings of R. Ovadiah Maimuni, Rambam's grandson such as The Treatise of the Pool available for free online?
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Writings of R. David Hanaggid

Are the Midrash David on Mo'adim of R. David Hanaggid, or any of his other writings (besides for the Midrash David on Avos) available for free online?
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Omission from Koteret to Hil. Talmud Torah

The Rambam wrote small introductions to sections of Mishna Torah called a Koteret. In the introduction to Hilchos Talmud Torah he writes: יש בכללן שתי מצוות עשה--(א) ללמוד תורה; (ב) לכבד מלמדיה ...
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Does a trapezoid require tzizit? (Or: how to make a four-cornered triangle)

My family was learning Rambam Hilchot Tzitzit 1:16 tonight and had some questions on how this works, as a practical matter: וכן המטיל לבעלת שלש ואחר כך השלימה לארבע והטיל לרביעית כולה פסולה שנאמר ...
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How can the Rebbe be considered Moshiach?

I've talked to various Chabad Rabbis, and I can say for certain that at least 1 definitely believes that the Rebbe could be Moshiach. In trying to prove this, he cites Rambam's Mishneh Torah ...
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62 views

Ein Halakha K'niflag

This article cites a principle in the name of R. Saadya Gaon and Rambam that אין הלכה כנפלג. He cites כתבים לגר"י קאפח, ח"ב עמ' 557. Where can this be found in the writings of the Geonim or Rambam? ...
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48 views

Citing the Jerusalem Talmud and Mishna Torah [duplicate]

How would you write an academic citation (format agnostic) for the Jerusalem Talmud or the Mishna Torah? i.e. a specific quote from each. I'm specifically asking about these as there is no standard ...
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27 views

Yad P'shutta For Free Online

Is R. Rabinovich's Yad P'shutta on the Mishne Torah available for free online? I already noted the commentary to Hil. T'shuva on HebrewBooks.
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The Vilna Gaon's distinction between the Rambam and the Ramban

I heard quoted in the name of the Vilna Gaon that (one of) the differences between the Rambam and the Ramban is that that Rambam held reality to be an 'Objective Reality' while the Ramban held that ...
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44 views

Source of “Koteret”

I have heard Rambam's presentation of the mitzvos at the beginning of each set of halachos referred to as the כותרת (koteret). What is the source for this usage?
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29 views

Moreh Nevuchim Online

Is the Hebrew text of Maimonides' Moreh HaNevuchim available for free online? (In text form rather than Pdf).
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63 views

God Desires the Heart

The Gemara (Sanhedrin 106b) says that "God desires the heart". A responsum attributed to Maimonides interprets this to mean "knowledge of God, morals and wisdom" (letter to Hasdai Ha-Levi; Maimonides ...
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Divrei Kabbalah in Maimonides' Usage

Rambam in the Laws of Fast Days (4: 7) writes that verses are recited from "Divrei Kabbalah" and from "Kitvei Kodesh" (holy writings). וּפְסוּקִים מִדִּבְרֵי קַבָּלָה וּמִכִּתְבֵי הַקֹּדֶשׁ ...
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R. Moses al-Ashkar's Response to Sefer ha-Emunot

Where can I find the Maharam al-Ashkar's response to Shem Tov ibn Shem Tov's Sefer ha-Emunot (Hassagot Al Mah She-Katab R. Shem-Tov Neged ha-RaMbaM)?
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Responsum of Maimonides Regarding Translating Mishne Torah

The Maimonides Reader (p. 478) quotes Rambam's responsum to Ibn Gabir regarding translating the MT (also referenced here). He responds to a request from this Arabic speaker who was able to learn ...
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What were the Rambam's sources?

In the introduction to the Mishneh Torah, the Rambam indicates that his compilation of the entire Oral Torah is derived from a few key Jewish texts: ואין צריך לומר הגמרא עצמה הבבלית והירושלמית ...
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Rambam's relationship with the Rif: a question on the Bartenura

In the Mishna to Chullin 4:6 (s.v. וכן שניטל צומת הגידין), the Bartenura refers to the Rif as having been the Rambam's teacher: "ושיטה זו תפסו רבותי... אבל רמבם ורב אלפס רבו תפסו עיקר הפירוש אחר". In ...
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Washing After Leaving Cemetary

What are the earliest sources (i.e. Chazal or Rishonim) for washing one's hands after visiting a cemetery? Is this mentioned by the Rambam?
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Rambam's statement about a blessing from the Ri Migash

The Artscroll Rishonim history book, in the section about the Rambam, records a "tradition" that the Rambam, as a young child, received a blessing from the Ri Migash, and that he (the Rambam) later ...
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Igros K'naos Regarding Rambam

Where could I find the Igros K'naos regarding Rambam's works for free online? In particular I am looking for a quote from Radak about the aggados there. A screenshot of that page would suffice.
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Perush Hamishna of Rambam Online

Where can I find Maimonides' commentary to the Mishna online (for free) as text?
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Maimonides' Responsum on Pre-Sinaic Mitzva Observance

The Maimonides Reader (p. 478) quotes Maimonides' responsum to Hasdai Ha-Levi where he states that our forefathers didn't keep the mitzvos at all. Where else can this responsum be found? ...
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Maimonides' 13 Principles

What are the earliest sources who state that the thirteen principles of Maimonides are authoritative?
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Is the Rambam Haggadah Significantly Different?

Are there significant differences between the Rambam Haggadah and the current mainstream Haggadot that are in use?
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Why is Ona'as Devarim not in Hilchos De'os?

The Rambam places most of the laws regarding social, interpersonal relationships (such as the prohibition against slander) in Hilchos De'os, but he seems to be missing an important one: ona'as ...
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Doing a Mitzva Yourself

Does Rambam ever mention (or reference) the principle that it is preferable to perform every mitzva oneself rather than through an agent? (See e.g. Kiddushin 41a).
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Mishneh Torah Artwork

In my yeshiva there is a library that has many very old seforim. While exploring the library I came across a volume of the Mishneh Torah which seems to be from 1574. I opened it and was surprised to ...
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Are We Biblically Commanded to Study the Oral Law According to Maimonides?

Rambam writes in Hil. Talmud Torah (1:7) that one must pay to teach his son the entire written Torah. וְחַיָּב לְלַמְּדוֹ בְּשָׂכָר עַד שֶׁיִּקְרָא תּוֹרָה שֶׁבִּכְתָב כֻּלָּהּ Kessef Mishna ...
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Historical documentation that the Rambam was supported by his brother

I have heard quoted many times that the Rambam wrote his Mishneh Torah while he was being supported entirely by his brother. It was only after his brother died at sea that the Rambam, needing to ...
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Does Maimonides Allow Prayer to Angels?

In his Mishna Commentary to Sanhedrin 10:1 Maimonides lists as his 5th principle the prohibition to pray to an angel even as an intermediary. He counts this in his enumeration of his 13 principles in ...
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Why is the ger toshav only accepted during the times of the Jubilee?

Why is the ger toshav only accepted during the times of the Jubilee? "A person who accepts these seven mitzvot is a ger toshav. A ger toshav may be accepted only in the era when the [laws of the] ...
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Why does the Rambam change language?

In Hilchos Megillah V'Chanukah, the Rambam writes in 2:15 טו. כיצד חובת סעודה זו שיאכל בשר ויתקן סעודה נאה כפי אשר תמצא ידו, ושותה יין עד שישתכר וירדם בשכרות Why does the Rambam switch from ...
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Purpose of Beis Hamikdash

Rambam writes that the purpose of the beis hamikdash is specifically for offering sacrifices and for pilgrimages (Sefer Hamitzvos: Shoresh 12): שיהיה לנו בית מוכן יבאו אליו ויחוגי בו ובו תהיה ...
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What is Rambam's opinion on Demons

In Mishne Torah A.Z (11:16) he says that sorcery and mysticism in general does not exist but doesn't refer to demons explicitly. Does the Rambam speak about demons specifically anywhere else?
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Why did the Rabbis make a decree for Yovel?

Rambam (Hilchos Tefila 2:8) says that בד"א ביום צום של כל שנה ושנה אבל ביום צום של שנת היובל מתפלל תפלת המוספים תשע ברכות כמו שהתפלל במוסף ראש השנה והם אותן הברכות עצמן לא פחות ולא יותר ואין ...
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Rambam's Talmud Commentary

Where can I find Rambam's commentary on Bavli (whatever remains of it) besides for his commentary on tractate Rosh HaShana?
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Rambam's Hilchos HaYerushalmi

I am looking for Rambam's Hilchos HaYerushalmi (ed. Lieberman) (or a some other edition if it exists). Is it available for free online?
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Is there any significance in the 10th of Rambam's 13 Principles of Faith quoting a Passuk?

If you read Rambam's 13 Ani Maamin's, 13 Principles of Faith, you'll note that only the 10th one makes reference to Tanach. Is there a reason for that? (Looking for sourced answer, rather than ...