ח עַל רַבּוֹ שֶׁרֹב חָכְמָתוֹ מִמֶּנּוּ; אִם מִקְרָא, מִקְרָא; וְאִם מִשְׁנָה, מִשְׁנָה; אִם גְּמָרָא, גְּמָרָא; קוֹרֵעַ כָּל בְּגָדָיו עַד שֶׁמְּגַלֶּה לִבּוֹ. וְיֵשׁ אוֹמְרִים שֶׁאֵינוֹ קוֹרֵעַ אֶלָּא טֶפַח, וְאֵינוֹ מְאַחֶה לְעוֹלָם. וַאֲפִלּוּ מִשְּׁמוּעָה רְחוֹקָה, קוֹרֵעַ עָלָיו לְעוֹלָם. וְאִם לֹא לָמַד רֹב חָכְמָתוֹ מִמֶּנּוּ, אֵינוֹ קוֹרֵעַ עָלָיו, אֶלָּא כְּדִין שְׁאָר מֵתִים שֶׁהוּא מִתְאַבֵּל עֲלֵיהֶם. וַאֲפִלּוּ לֹא לָמַד מִמֶּנּוּ אֶלָּא דָּבָר אֶחָד, בֵּין קָטָן בֵּין גָּדוֹל, קוֹרֵעַ עָלָיו. הַגָּה: וְיֵשׁ אוֹמְרִים דְּקֶרַע שֶׁעַל רַבּוֹ שֶׁאֵינוֹ מֻבְהָק, נָמֵי אֵינוֹ מִתְאַחֶה (טוּר בְּשֵׁם הָרֹא"שׁ וּבֵית יוֹסֵף בְּשֵׁם רַשִׁ"י וְתוֹסָפוֹת והר"ן). תַּלְמִידֵי חֲכָמִים שֶׁיּוֹשְׁבִים בְּיַחַד וּמַקְשִׁים וּמְפָרְקִין זֶה לָזֶה וְלוֹמְדִים בְּיַחַד, יֵשׁ אוֹמְרִים שֶׁדִּינָן כְּרַב שֶׁאֵינוֹ מֻבְהָק, וְיֵשׁ אוֹמְרִים שֶׁדִּינָן כְּרַב מֻבְהָק (אֵלּוּ שֵׁנִי הַסְבָרוֹת בַּטּוּר). וְיֵשׁ אוֹמְרִים דְּאֵין צְרִיכִין לִקְרֹעַ אֶלָּא עַל רַבּוֹ שֶׁלִּמְּדוֹ רֹב חָכְמָתוֹ, אֲבָל חֲבֵרִים הַלּוֹמְדִים זֶה עִם זֶה, אוֹ שֶׁהֵאִיר עֵינָיו בְּדָבָר אֶחָד, אֵינוֹ אֶלָּא חֻמְרָא בְּעָלְמָא, וְהֵיכָא דְּנָהוּג נָהוּג, וְהֵיכָא דְּלֹא נָהוּג לֹא נָהוּג, וְאֵין מוֹרִין כֵּן. (מָרְדְּכַי ה"א בְּשֵׁם הַשְּׁאִלְתּוֹת והגמ"יי בְּשֵׁם הר"מ), וְלָכֵן נָהֲגוּ לְהָקֵל בִּמְדִינוֹת אֵלּוּ.
8 For his teacher from whom he derived the greater part of his wisdom, whether in Bible, Mishna or Gemara, one rends all his garments until he bares his chest. And some say that he rends only to the extent of a handbreadth, and he never resews the rent; even if he receives distant tidings, he must always rend [garments] for him. However, if he did not derive the greater part of his wisdom from him, he rends [garments] for him only according to the law of other dead, for whom he [must] mourn; and even if he learnt from him only a single matter, whether small or great, he must rend [garments] for him. Rema: Some say that a rent made for one's teacher who is not distinguished, must also not be resewn. [ With respect to ] scholars who sit together, debate with, and resolve problems for one another, and study together, some say that they are considered to be in the category of a teacher who is not distinguished; others say that they are in the category of a teacher who is distinguished; [ still ] others say that [ garments ] are to be rent only for one's teacher who taught him the greater part of his knowledge, but for fellow-collegiates who study together or for one who enlightened his eyes in a single matter, [ rending garments ] is merely an [ additional ] stingency, and wherever such is the practice, it is followed, and wherever such is not the practice, it is not followed; but we do not rule thus. Hence it is the common practice to adopt the more lenient view in these countries.