Mitzvotמצוות

The Mitzvah of Placing a Mezuzah

These sources establish the biblical foundation for the mezuzah mitzvah, drawing from the Shema passages and their rabbinic interpretation. They address the halakhic requirements for writing, materials, and placement on doorposts, as well as the mezuzah's spiritual role as a daily reminder of divine presence and covenantal commitment in the home.

וכתבתם על מְזוּזֹת ביתך ובשעריך

11 sources · all verified

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What the sources say

The foundation of the entire mitzvah is a direct biblical command: Devarim 6:9 instructs "inscribe them on the doorposts of your house and on your gates," and this obligation is repeated in Devarim 11:20, where it appears alongside the commands for tefillin, framing the mezuzah as part of a broader system of keeping God's words ever-present.

The Gemara in Menachot 32a–34a derives from the phrase "upon your doorposts" that the mezuzah must actually be affixed to the doorpost itself — one who merely hangs it on a stick not only fails to fulfill the mitzvah but actively exposes himself to danger.

Beyond the legal obligation, the Rambam (Mishneh Torah, Tefillin, Mezuzah and the Torah Scroll 6:1–13) explains that the deeper purpose is constant spiritual awakening: every time a person enters or leaves his home he encounters the unity of God's name, is reminded of God's love, and is roused from preoccupation with the vanities of time to recognize that nothing endures forever except knowledge of the Creator.

Sefer HaChinukh 423:2 similarly describes the mezuzah's root as serving as a memory device for faith in God at every coming and going, and cites the Talmudic ruling that it be placed in the handbreadth adjacent to the public domain precisely so that one "will be met by the commandment immediately."

Shulchan Arukh, Yoreh De'ah 285:1 codifies the practical stakes: one who is careful in the mitzvah of mezuzah will have his days and the days of his children lengthened, while one who is not careful will have his days shortened.

Source 1 · Tanach
Verified

Deuteronomy 6:4-9

דברים ו׳:ד׳-ט׳

Deuteronomy 6:4-9

The Shema passage commands teaching these words to one's children, speaking of them constantly, and writing them on the doorposts of the house and gates. This is the foundational biblical source for mezuzah as a public sign of covenantal remembrance.

וּכְתַבְתָּ֛ם עַל־מְזֻז֥וֹת בֵּיתֶ֖ךָ וּבִשְׁעָרֶֽיךָ׃ {ס}

inscribe them on the doorposts of your house and on your gates.

Source 2 · Tanach
Verified

Deuteronomy 11:13-21

דברים י״א:י״ג-כ״א

Deuteronomy 11:13-21

This second paragraph of Shema ties observance of God's commandments to blessing in the land and again commands writing the words on doorposts and gates. It frames mezuzah as a daily reminder of divine service and covenantal loyalty.

וְשַׂמְתֶּם֙ אֶת־דְּבָרַ֣י אֵ֔לֶּה עַל־לְבַבְכֶ֖ם וְעַֽל־נַפְשְׁכֶ֑ם וּקְשַׁרְתֶּ֨ם אֹתָ֤ם לְאוֹת֙ עַל־יֶדְכֶ֔ם וְהָי֥וּ לְטוֹטָפֹ֖ת בֵּ֥ין עֵינֵיכֶֽם׃ וּכְתַבְתָּ֛ם עַל־מְזוּז֥וֹת בֵּיתֶ֖ךָ וּבִשְׁעָרֶֽיךָ׃

Therefore impress these My words upon your very heart: bind them as a sign on your hand and let them serve as a symbol on your forehead, and inscribe them on the doorposts of your house and on your gates—

Source 3 · Chazal
Verified

Sifra, Tzav, Mekhilta DeMiluim I:23

Sifra, Tzav, Mekhilta DeMiluim I:23

The doorways of private homes and city gates require a mezuzah based on the Devarim passage "and you shall write them on the mezuzot of your house and on your gates.

שערי בתים ושערי מדינות יש בהם מצוה למקום שנאמר (דברים ו, ט) "וכתבתם על מְזוּזֹת ביתך ובשעריך".

Source 4 · Chazal
Verified

Menachot 32a-34a

מנחות ל״ב א-ל״ד א

Menachot 32a-34a

This is the central Talmudic sugya on mezuzah: what must be written, how it must be written, where it is affixed, and the halakhic requirements of the parchment and placement. It grounds the practical mitzvah of putting mezuzah on the doorpost.

וְאָמַר רַב יְהוּדָה, אָמַר שְׁמוּאֵל: תְּלָאָהּ בְּמַקֵּל – פְּסוּלָה. מַאי טַעְמָא? ״בִּשְׁעָרֶיךָ״ בָּעֵינַן. תַּנְיָא נָמֵי הָכִי: תְּלָאָהּ בְּמַקֵּל, אוֹ שֶׁהִנִּיחָהּ אַחַר הַדֶּלֶת – סַכָּנָה וְאֵין בָּהּ מִצְוָה.

And Rav Yehuda says that Shmuel says: If one hung a mezuza on a stick in the entranceway, without affixing it to the doorpost, it is unfit. What is the reason? We require the fulfillment of the verse: “And you shall write them upon the doorposts of your house, and upon your gates” (Deuteronomy 6:9). This ruling is also taught in a baraita: If one hung a mezuza on a stick, or placed it so that it was affixed behind the door within the house, he exposes himself to danger, and it does not enable him to fulfill the mitzva.

Source 5 · Rishonim
Verified

Tur, Yoreh De'ah 285

טור, יורה דעה רפ״ה

Tur, Yoreh De'ah 285

The Tur organizes the laws of mezuzah and their practical requirements, forming the basis for later codifiers. It is the classic halakhic doorway into the mitzvah's obligation and placement.

הלכות מזוזה מצות עשה לכתוב פרשת שמע והיה אם שמוע ולקובען על מזוזת הפתח דכתיב וכתבתם על מזוזות ביתך ובשעריך וצריך ליזהר מאד בה כמו שאחז"ל כל מי שיש לו תפילין בראשו ובזרועו וציצית בבגדו ומזוזה בפתחו מוחזק הוא שלא יחטא מפני שיש במזוזה יחודו של הקב"ה ותמיד בבואו ובצאתו יזכור יחודו של הקב"ה ויתן יראתו על פניו לבלתי יחטא וכל הזהיר בה יאריכו ימיו וימי בניו דכתיב למען ירבו ימיכם וימי בניכם ואם אינו זהיר כה יתקצרו דמכלל הן אתה שומע לאו וכן דרשו חכמים בעון מזוזה בניו ובנותיו מתים קטנים דכתיב דם נפשות אביונים נקיים וסמיך ליה לא במחתרת מצאתים וגדולה מזה שהבית נשמר על ידה כמו שדרשו בפסוק ה' שומרך וגומר מלך ב"ו מבפנים ועבדיו שומרין אותו מבחוץ ואתם ישנין על מטתכם והקב"ה שומר אתכם מבחוץ וע"כ נתינתה בטפח החיצון שיהא כל הבית לפנים הימנה ובשמירתה ומ"מ לא יהא כוונת המקיימה אלא לקיים מצות הבורא יתעלה שצונו עליה:

Source 6 · Rishonim
Verified

Sefer HaChinukh 423

ספר החינוך תכ״ג

Sefer HaChinukh 423:2

The Chinukh explains the mitzvah of mezuzah as a constant reminder of God's unity and providence, meant to awaken a person's heart from distraction whenever they enter and leave. It is one of the classic explanations of the mitzvah's educational function.

מִשָּׁרְשֵׁי הַמִּצְוָה לִהְיוֹת זִכָּרוֹן לָאָדָם בֶּאֱמוּנַת הַשֵּׁם בְּכָל עֵת בּוֹאוֹ לְבֵיתוֹ וְצֵאתוֹ, וּכְמוֹ שֶׁכָּתַבְתִּי בְּעִנְיַן הַתְּפִלִּין, וּכְעִנְיָן שֶׁאָמְרוּ זִכְרוֹנָם לִבְרָכָה בְּמִצְוָה זוֹ (מנחות, לג, א) אָמַר רַבִּי זֵירָא, אָמַר רַב מַתָּנָה, אָמַר שְׁמוּאֵל מִצְוָה לְהַנִּיחָהּ בִּתְחִלַּת שְׁלִישׁ הָעֶלְיוֹן, אָמַר רַבָּה [רָבָא] מִצְוָה לְהַנִּיחָהּ בַּטֶּפַח הַסָּמוּךְ לִרְשׁוּת הָרַבִּים, מַאי טַעְמָא? רַבָּנָן אָמְרִי כִּי הֵיכִי דְּתִפְגַּע בֵּהּ מִצְוָה מִיָּד (שם ב).

It is from the roots of the commandment that it serve as a memory device for a person about faith in God, every time he comes into his home and [when] he leaves [it], and like I wrote about the matter of tefillin. And [it is] like the matter that they, may their memory be blessed, wrote about this commandment (Menachot 33a), “Rabbi Zeira said that Rav Matnah said that Shmuel said, ‘It is a commandment to place it in the top third.’ Rabbah [Rava] said, ‘It is a commandment to place it in the handbreadth adjacent to the public domain.’ What is the reason? The Rabbis said, ‘So that one will be met by the commandment immediately’” (Menachot 33b).

Source 7 · Rishonim
Verified

Mishneh Torah, Mezuzah and the Torah Scroll 6:1-13

משנה תורה, הלכות תפילין ומזוזה וספר תורה ו׳:א׳-י״ג

Mishneh Torah, Tefillin, Mezuzah and the Torah Scroll 6:1-13

Rambam details the laws of placement, inspection, and who is obligated, showing that mezuzah is both a formal halakhic requirement and a recurring reminder that sanctifies the threshold of the home.

חַיָּב אָדָם לְהִזָּהֵר בִּמְזוּזָה מִפְּנֵי שֶׁהִיא חוֹבַת הַכּל תָּמִיד. וְכָל זְמַן שֶׁיִּכָּנֵס וְיֵצֵא יִפְגַּע בְּיִחוּד הַשֵּׁם שְׁמוֹ שֶׁל הַקָּדוֹשׁ בָּרוּךְ הוּא וְיִזְכֹּר אַהֲבָתוֹ וְיֵעוֹר מִשְּׁנָתוֹ וְשִׁגְיוֹתָיו בְּהַבְלֵי הַזְּמַן. וְיֵדַע שֶׁאֵין דָּבָר הָעוֹמֵד לְעוֹלָם וּלְעוֹלְמֵי עוֹלָמִים אֶלָּא יְדִיעַת צוּר הָעוֹלָם. וּמִיָּד הוּא חוֹזֵר לְדַעְתּוֹ וְהוֹלֵךְ בְּדַרְכֵי מֵישָׁרִים. אָמְרוּ חֲכָמִים הָרִאשׁוֹנִים כָּל מִי שֶׁיֵּשׁ לוֹ תְּפִלִּין בְּרֹאשׁוֹ וּבִזְרוֹעוֹ וְצִיצִית בְּבִגְדוֹ וּמְזוּזָה בְּפִתְחוֹ מֻחְזָק הוּא שֶׁלֹּא יֶחֱטָא שֶׁהֲרֵי יֵשׁ לוֹ מַזְכִּירִין רַבִּים וְהֵן הֵם הַמַּלְאָכִים שֶׁמַּצִּילִין אוֹתוֹ מִלַּחֲטֹא שֶׁנֶּאֱמַר (תהילים לד ח) ״חֹנֶה מַלְאַךְ יְיָ׳‎ סָבִיב לִירֵאָיו וַיְחַלְּצֵם״:

A person must show great care in [the observance of the mitzvah of] mezuzah, because it is an obligation which is constantly incumbent upon everyone. [Through its observance,] whenever a person enters or leaves [the house], he will encounter the unity of the name of the Holy One, blessed be He, and remember his love for Him. Thus, he will awake from his sleep and his obsession with the vanities of time, and recognize that there is nothing which lasts for eternity except the knowledge of the Creator of the world. This will motivate him to regain full awareness and follow the paths of the upright. Whoever wears tefillin on his head and arm, wears tzitzit on his garment, and has a mezuzah on his entrance, can be assured that he will not sin, because he has many who will remind him. These are the angels, who will prevent him from sinning, as [Psalms 34:8] states: "The angel of God camps around those who fear Him and protects them." Blessed be God who offers assistance.

Source 8 · Acharonim
Verified

Arukh HaShulchan, Yoreh De'ah 285

ערוך השולחן, יורה דעה רפ״ה

Arukh HaShulchan, Yoreh De'ah 285

Arukh HaShulchan explains the laws of mezuzah in a broad, practical way and also emphasizes its role as a reminder of God's presence in the home. It bridges halakhah with the mitzvah's spiritual meaning.

ומפני שיש במזוזה ייחודו של הקדוש ברוך הוא, ותמיד בבואו ובצאתו יזכור על זה – יתן יראתו על פניו לבלתי יחטא. דמזוזה היא לצד הימין בכניסתו, ולכן נתינתה בטפח החיצון, שיהא כל הבית לפנים הימנה ובשמירתה.

Source 9 · Acharonim
Verified

Shulchan Arukh, Yoreh De'ah 285

שולחן ערוך, יורה דעה רפ״ה — ד"ה שכר מצות מזוזה

Shulchan Arukh, Yoreh De'ah 285:1

The Shulchan Arukh rules the laws of mezuzah, including which doorways require one and basic rules of affixing. This is the governing practical code for the mitzvah.

שכר מצות מזוזה. ובו ב' סעיפים: מצות עשה לכתוב פ' שמע והיה אם שמוע ולקבעם על מזוזת הפתח וצריך ליזהר בה מאד וכל הזהיר בה יאריכו ימיו וימי בניו ואם אינו זהיר בה יתקצרו: הגה ומ"מ אם אין ידו משגת לקנות תפילין ומזוזה יקנה תפילין ולא מזוזה (ירושלמי סוף מגילה ובא"ח סי' ל"ח סי"ב) דמצוה שהיא חובת הגוף עדיפא:

The reward and mitzva of mezuzah. Containing 2 paragraphs: It is a positive commandment to write the Shema, the Veyhaya Im-Shamoa, and to fix them on the side of one’s door, and one needs to be very careful in this, and all who are careful in this, their days will be lengthened, and the days of their children. And if one is not careful in this, his days will be shortened. Rama: And in any case, if it's out of his reach to acquir Tefillin and a Mezuzah, let him acquire Tefillin and not Mezuzah (Yerushalmi Megillah, end; O"C 38:12), as a mitzvah that is a bodily obligation is greater.

Source 10 · Hasidic
Verified

Tanya, Part I; Likkutei Amarim 41

תניא, חלק ראשון; ליקוטי אמרים מ״א — ד"ה וְהִנֵּה ה׳ נִצָּב עָלָיו

Tanya, Part I; Likkutei Amarim 41:3

The Tanya teaches that actions such as mitzvot and physical objects can draw divine awareness into everyday life. In this chapter, mitzvah observance is framed as channeling fear of Heaven into lived experience, which fits the mezuzah as a home-facing reminder.

וְהִנֵּה ה׳ נִצָּב עָלָיו, וּ״מְלֹא כָל הָאָרֶץ כְּבוֹדוֹ״, וּמַבִּיט עָלָיו, וּבוֹחֵן כְּלָיוֹת וָלֵב אִם עוֹבְדוֹ כָּרָאוּי. וְעַל כֵּן צָרִיךְ לַעֲבוֹד לְפָנָיו בְּאֵימָה וּבְיִרְאָה, כְּעוֹמֵד לִפְנֵי הַמֶּלֶךְ. וְיַעֲמִיק בְּמַחֲשָׁבָה זוֹ וְיַאֲרִיךְ בָּהּ כְּפִי יְכוֹלֶת הַשָּׂגַת מוֹחוֹ וּמַחֲשַׁבְתּוֹ, וּכְפִי הַפְּנַאי שֶׁלּוֹ, לִפְנֵי עֵסֶק הַתּוֹרָה, אוֹ הַמִּצְוָה, כְּמוֹ לִפְנֵי לְבִישַׁת טַלִּית וּתְפִילִּין. וְגַם יִתְבּוֹנֵן, אֵיךְ שֶׁאוֹר־אֵין־סוֹף בָּרוּךְ־הוּא, הַ״סּוֹבֵב כָּל עָלְמִין״ וּ״מְמַלֵּא כָּל עָלְמִין״, הוּא רָצוֹן הָעֶלְיוֹן, הוּא מְלוּבָּשׁ בְּאוֹתִיּוֹת וְחָכְמַת הַתּוֹרָה, אוֹ בְּצִיצִית וּתְפִלִּין אֵלּוּ, וּבִקְרִיאָתוֹ אוֹ בִּלְבִישָׁתוֹ הוּא מַמְשִׁיךְ אוֹרוֹ יִתְבָּרֵךְ עָלָיו, דְּהַיְינוּ עַל ״חֵלֶק אֱלוֹהַּ מִמַּעַל״ שֶׁבְּתוֹךְ גּוּפוֹ, לִיכָּלֵל וְלִיבָּטֵל בְּאוֹרוֹ יִתְבָּרֵךְ.

“And, behold, G–d stands over him,” and “The whole world is full of His glory,” and He looks upon him and “Searches his reins and heart” [to see] if he is serving Him as is fitting. Therefore he must serve in His presence with awe and fear like one standing before the king. One must meditate profoundly and at length on this thought according to the capacity of apprehension of his brain and thought and according to the time available to him, before he occupies himself with Torah or a commandment, such as prior to putting on his tallit or tefillin. He should also reflect how the light of the En Sof, blessed is He, which encompasses all worlds and pervades all worlds, which is identical with the Supernal Will, is clothed in the letters and wisdom of the Torah and in the tzitzit and the tefillin, and through his study or donning these latter he draws over himself His light, blessed be He, that is, over “the portion of G–dliness from above” which is within his body, that it may be absorbed and nullified in His light, blessed be He.

Source 11 · Hasidic
Verified

Tanya, Part I; Likkutei Amarim 37

תניא, חלק ראשון; ליקוטי אמרים ל״ז — ד"ה כִּי הַגּוֹרֵם שְׂכַר הַמִּצְוָה – הִיא

Tanya, Part I; Likkutei Amarim 37:2

This chapter discusses how physical acts and objects serve the soul's relationship with God, especially when they sanctify ordinary life. It illuminates why mezuzah stands at the entrance as a meeting point between the spiritual and the material.

כִּי הַגּוֹרֵם שְׂכַר הַמִּצְוָה – הִיא הַמִּצְוָה בְּעַצְמָהּ, כִּי בַּעֲשִׂיָּיתָהּ, מַמְשִׁיךְ הָאָדָם גִּילּוּי אוֹר־אֵין־סוֹף בָּרוּךְ־הוּא מִלְמַעְלָה לְמַטָּה לְהִתְלַבֵּשׁ בְּגַשְׁמִיּוּת עוֹלָם הַזֶּה, בְּדָבָר שֶׁהָיָה תְּחִלָּה תַּחַת מֶמְשֶׁלֶת קְלִיפַּת נוֹגַהּ וּמְקַבֵּל חַיּוּתָהּ מִמֶּנָּה, שֶׁהֵם כָּל דְּבָרִים הַטְּהוֹרִים וּמוּתָּרִים שֶׁנַּעֲשֵׂית בָּהֶם הַמִּצְוָה מַעֲשִׂיית, כְּגוֹן: קְלַף הַתְּפִילִּין וּמְזוּזָה וְסֵפֶר תּוֹרָה, וּכְמַאֲמַר רַבּוֹתֵינוּ־זִכְרוֹנָם־לִבְרָכָה: ״לֹא הוּכְשַׁר לִמְלֶאכֶת שָׁמַיִם אֶלָּא טְהוֹרִים וּמוּתָּרִים בְּפִיךָ״. וְכֵן אֶתְרוֹג שֶׁאֵינוֹ עָרְלָה,

For what causes the reward of a commandment is the commandment itself, because by virtue of performing it the person suffuses a flood of light of the En Sof, blessed is He, from above downward, to be clothed in the corporeality of the world in something that was previously under the dominion of the kelipat nogah, from which it had received its vitality. These are all those things that are [ritually] clean and permissible, wherewith the precept of action is performed, viz., parchment used in the tefillin, mezuzah, and Torah scroll, as taught by the Rabbis that nothing is fitting for a sacred purpose which is not clean and permissible for consumption; similarly an etrog which is not orlah;