א אִם נִתְקַלְקֵל עוֹר שֶׁל שְׁנֵי בָּתִּים מִבָּתֵּי הָרֹאשׁ זֶה אֵצֶל זֶה, אִם הַתְּפִלִּין יְשָׁנִים, פְּסוּלִים, וְאִם הֵם חֲדָשִׁים, כְּשֵׁרִים, כָּל זְמַן שֶׁעוֹר מוֹשַׁב הַבָּתִּים קַיָּם: הַגָּה: גַּם הַבָּתִּים צְרִיכִין לִהְיוֹת קַיָּמִים, אֶלָּא שֶׁנִּקְרְעוּ קְצָת (בֵּית יוֹסֵף) וְיֵשׁ אוֹמְרִים לְהֶפֶךְ, בִּישָׁנִים כְּשֵׁרִים, וּבַחֲדָשִׁים פְּסוּלִים, (רַשִׁ"י וְהָרֹא"שׁ) וְנ"ל דְּיֵשׁ לְהַחְמִיר לִפְסֹל בִּשְׁנֵיהֶם. וְאֵלּוּ הֵם חֲדָשִׁים, כָּל זְמַן שֶׁאִם הָיוּ מוֹשְׁכִים אוֹתָם בִּרְצוּעוֹת, הַבַּיִת מִתְפַּשֵּׁט וְנִפְתָּח נִקְרָא חָדָשׁ, וְאִם אֵינוֹ נִפְתָּח נִקְרָא יָשָׁן, וְאִם נִתְקַלְקְלוּ שְׁנַיִם זֶה שֶׁלֹּא כְּנֶגֶד זֶה, רִאשׁוֹן וּשְׁלִישִׁי כְּשֵׁרִים, אֲפִלּוּ הֵם יְשָׁנִים וְאִם נִתְקַלְקְלוּ ג' בָּתִּים בְּכָל עִנְיָן פְּסוּלִים.
1 In the case that the leather of two compartments, one next to the other, of the head Tefillin are damaged, if the Tefillin are old they are invalid. [However] if they are new, they are valid as long as the leather as the base of the compartments exists Rema: the compartments also need to exist unless they are slightly ripped (Beit Yosef) and there are those who say the opposite, that old [Tefillin] would be valid and new [Tefillin] would be invalid [Rashi and ROSH]. And it appears to me, there is to be stringent so that to consider both of them invalid. And these are [what are considered] new: Any time that if you were to pull them by the straps of the head, the compartments would spread out and open; they are new. And if they do not open, they are called old. And if two [compartments of the head] that are not directly next to the other became damaged, [such as] the first and third [compartments], they are valid even if they are old. And if three compartments became damaged, in all cases the [Tefillin] are invalid.