2סִכֵּךְ בְּדָבָר שֶׁאֵין גִּדּוּלָיו מִן הָאָרֶץ אוֹ בִּמְחֻבָּר לָאָרֶץ אוֹ בְּדָבָר שֶׁמְּקַבֵּל טֻמְאָה פְּסוּלָה. אֲבָל אִם עָבַר וְסִכֵּךְ בְּדָבָר הַנּוֹבֵל וְנוֹשֵׁר אוֹ בְּדָבָר שֶׁרֵיחוֹ רַע כְּשֵׁרָה. שֶׁלֹּא אָמְרוּ אֵין מְסַכְּכִין בְּאֵלּוּ אֶלָּא כְּדֵי שֶׁלֹּא יַנִּיחַ הַסֻּכָּה וְיֵצֵא. וְצָרִיךְ לְהִזָּהֵר שֶׁלֹּא יִהְיוּ הוּצִין וְעָלִין שֶׁל סְכָךְ יוֹרְדִין לְתוֹךְ עֲשָׂרָה טְפָחִים כְּדֵי שֶׁלֹּא יָצֵר לוֹ בִּישִׁיבָתוֹ. סִכְּכָהּ בְּמִינֵי מַתָּכוֹת אוֹ בַּעֲצָמוֹת וְעוֹרוֹת פְּסוּלָה מִפְּנֵי שֶׁאֵינָן גִּדּוּלֵי קַרְקַע. הִדְלָה עָלֶיהָ גְּפָנִים וְכַיּוֹצֵא בָּהֶן עַד שֶׁנַּעֲשׂוּ סֻכָּה פְּסוּלָה שֶׁהֲרֵי לֹא נֶעֶקְרוּ. סִכְּכָהּ בִּכְלֵי עֵץ וּבְמַחֲצָלוֹת הָעֲשׂוּיוֹת לִשְׁכִיבָה וְכַיּוֹצֵא בָּהֶן פְּסוּלָה מִפְּנֵי שֶׁהֵן מְקַבְּלִין טֻמְאָה. וְכֵן אִם סִכְּכָהּ בְּשִׁבְרֵי כֵּלִים וּבְלִיּוֹתֵיהֶן פְּסוּלָה הוֹאִיל וְהָיוּ מְקַבְּלִין טֻמְאָה שֶׁמָּא יְסַכֵּךְ בִּשְׁבָרִים שֶׁעֲדַיִן לֹא טָהֲרוּ:
When a person uses as s'chach a substance which does not grow from the ground, is still connected to the ground, or is subject to contracting ritual impurity, [the sukkah] is not acceptable. However, if he transgressed and used as s'chach a substance which has elements which fall off and wither, or which possesses an unpleasant odor, it is kosher. [Our Sages] said only that one should not use these as s'chach lest one leave one's sukkah and depart. One must take care that the branches and leaves should not descend within ten handbreadths of the ground, so that one will not be uncomfortable when using the sukkah. If one used metals, bones, or hides as s'chach, it is unacceptable because these do not grow from the ground. If one suspended vines and the like over it until they made a sukkah, it is unacceptable, because they were not uprooted [from the ground]. Should one use wooden utensils, mats that were made to lie on, and the like as s'chach, it is unacceptable, because they are subject to contracting ritual impurity. Similarly, using broken and worn out utensils as s'chach is unacceptable. Since these substances were subject to ritual impurity, [the latter law was instituted] lest one use broken pieces which have not yet attained a state of [unquestionable] purity.