158 Avot 3/5-8

(ה) רַבִּי נְחוּנְיָא בֶּן הַקָּנֶה אוֹמֵר, כָּל הַמְקַבֵּל עָלָיו עֹל תּוֹרָה, מַעֲבִירִין מִמֶּנּוּ עֹל מַלְכוּת וְעֹל דֶּרֶךְ אֶרֶץ. וְכָל הַפּוֹרֵק מִמֶּנּוּ עֹל תּוֹרָה, נוֹתְנִין עָלָיו עֹל מַלְכוּת וְעֹל דֶּרֶךְ אֶרֶץ:

(ו) רַבִּי חֲלַפְתָּא בֶן דּוֹסָא אִישׁ כְּפַר חֲנַנְיָה אוֹמֵר, עֲשָׂרָה שֶׁיּוֹשְׁבִין וְעוֹסְקִין בַּתּוֹרָה, שְׁכִינָה שְׁרוּיָה בֵינֵיהֶם, שֶׁנֶּאֱמַר (תהלים פב) אֱלֹהִים נִצָּב בַּעֲדַת אֵל. וּמִנַּיִן אֲפִלּוּ חֲמִשָּׁה, שֶׁנֶּאֱמַר (עמוס ט) וַאֲגֻדָּתוֹ עַל אֶרֶץ יְסָדָהּ. וּמִנַּיִן אֲפִלּוּ שְׁלשָׁה, שֶׁנֶּאֱמַר (תהלים פב) בְּקֶרֶב אֱלֹהִים יִשְׁפֹּט. וּמִנַּיִן אֲפִלּוּ שְׁנַיִם, שֶׁנֶּאֱמַר (מלאכי ג) אָז נִדְבְּרוּ יִרְאֵי ה' אִישׁ אֶל רֵעֵהוּ וַיַּקְשֵׁב ה' וַיִּשְׁמָע וְגוֹ'. וּמִנַּיִן אֲפִלּוּ אֶחָד, שֶׁנֶּאֱמַר (שמות כ) בְּכָל הַמָּקוֹם אֲשֶׁר אַזְכִּיר אֶת שְׁמִי אָבֹא אֵלֶיךָ וּבֵרַכְתִּיךָ:

(ז) רַבִּי אֶלְעָזָר אִישׁ בַּרְתּוֹתָא אוֹמֵר, תֶּן לוֹ מִשֶּׁלּוֹ, שֶׁאַתָּה וְשֶׁלְּךָ שֶׁלּוֹ. וְכֵן בְּדָוִד הוּא אוֹמֵר (דברי הימים א כט) כִּי מִמְּךָ הַכֹּל וּמִיָּדְךָ נָתַנּוּ לָךְ. רַבִּי שִׁמְעוֹן אוֹמֵר, הַמְהַלֵּךְ בַּדֶּרֶךְ וְשׁוֹנֶה, וּמַפְסִיק מִמִּשְׁנָתוֹ וְאוֹמֵר, מַה נָּאֶה אִילָן זֶה וּמַה נָּאֶה נִיר זֶה, מַעֲלֶה עָלָיו הַכָּתוּב כְּאִלּוּ מִתְחַיֵּב בְּנַפְשׁוֹ:

(ח) רַבִּי דּוֹסְתַּאי בְּרַבִּי יַנַּאי מִשּׁוּם רַבִּי מֵאִיר אוֹמֵר, כָּל הַשּׁוֹכֵחַ דָּבָר אֶחָד מִמִּשְׁנָתוֹ, מַעֲלֶה עָלָיו הַכָּתוּב כְּאִלּוּ מִתְחַיֵּב בְּנַפְשׁוֹ, שֶׁנֶּאֱמַר (דברים ד) רַק הִשָּׁמֶר לְךָ וּשְׁמֹר נַפְשְׁךָ מְאֹד פֶּן תִּשְׁכַּח אֶת הַדְּבָרִים אֲשֶׁר רָאוּ עֵינֶיךָ. יָכוֹל אֲפִלּוּ תָקְפָה עָלָיו מִשְׁנָתוֹ, תַּלְמוּד לוֹמַר (שם) וּפֶן יָסוּרוּ מִלְּבָבְךָ כֹּל יְמֵי חַיֶּיךָ, הָא אֵינוֹ מִתְחַיֵּב בְּנַפְשׁוֹ עַד שֶׁיֵּשֵׁב וִיסִירֵם מִלִּבּוֹ:

(5) Rabbi Nechunya ben Hakanah says: Anyone who accepts the yoke of Torah upon himself, they lift from him the yoke of government and the yoke of the way of the world (derekh erets). And anyone who casts from himself the yoke of Torah, they place upon him the yoke of government and the yoke of the way of the world (derekh erets).

(6) Rabbi Chalafta [ben Dosa] of Kfar Chananiah says: Ten who are sitting together and engaging in Torah, the Divine Presence rests among them, as it is said (Psalms 82:1): “God stands in the congregation of God.” And from where [is there proof that this is true] even [when there are only] five? As it is said (Amos 9:6): “And He has founded His band upon the earth.” And from where even three? As it is said (Psalms 82:1): “In the midst of judges He judges.” And from where even two? As it is said (Malachi 3:16): “Then those who feared the Lord spoke one with another, and the Lord hearkened and heard.” And from where even one? As it is said (Exodus 20:20 (20:21 in NJPS)): “In every place where I cause My Name to be mentioned I will come to you and bless you.”

(7) Rabbi Elazar, man of Bartuta, says: Give Him from what is His, for you and yours are His, and thus with David it says, "For all comes from You, and from Your hand we have given to You" (I Chronicles 29:14). Rabbi Shimon says: He who is walking on the way and repeating his studies, and interrupts his studies and says, "How lovely is this tree! And how lovely is this newly plowed field!" - Scripture considers him as if he is liable for [forfeiture of] his life.

(8) Rabbi Dostai beRebbe Yannai in the name of Rabbi Meir says: Anyone who forgets one thing from his studies - Scripture considers him as if he is liable for [forfeiture of] his life, as it is said (Deuteronomy 4:9): "Only guard yourself, and guard your life diligently, lest you forget the things which your eyes saw." One could [suppose this statement applies to] even one whose studies have overpowered him; therefore, the verse says, "and lest they depart from your heart all the days of your life" - he is not liable for [forfeiture of] his life until he sits down and [intentionally] removes them from his heart.