16שְׁלֹשָׁה סַנְדָּלִין הֵן. שֶׁל אָדָם טָמֵא מִדְרָס. שֶׁל מַתָּכוֹת שֶׁל בְּהֵמָה טָמֵא טְמֵא מֵת. שֶׁל שַׁעַם וְשֶׁל צְפִירָה טְהוֹרָה מִכְּלוּם. כְּלָלוֹ שֶׁל דָּבָר כָּל כְּלִי שֶׁאֵינוֹ רָאוּי לְמִשְׁכָּב אוֹ לְמֶרְכָּב אוֹ שֶׁהוּא רָאוּי וְלֹא נַעֲשָׂה [לְכָךְ] אֶלָּא לִמְלָאכָה אַחֶרֶת הֲרֵי הוּא טָהוֹר מִן הַמִּדְרָס. נַעֲשָׂה לִמְלָאכָה אַחֶרֶת וּמְשַׁמֵּשׁ עִמָּהּ אֶת הַיְשִׁיבָה כְּגוֹן הַטַּלִּית וְהָרְדִיד מִתְטַמֵּא בְּמִדְרָס. וְכָל הַמִּתְטַמֵּא בְּמִדְרָס מִתְטַמֵּא בְּמֵת וְיֵשׁ מִתְטַמֵּא בְּמֵת וְאֵינוֹ מִתְטַמֵּא בְּמִדְרָס כְּמוֹ שֶׁבֵּאַרְנוּ. וְכָל הַמִּתְטַמֵּא בְּמֵת מִתְטַמֵּא בִּשְׁאָר אֲבוֹת הַטֻּמְאוֹת בֵּין אָבוֹת שֶׁל תּוֹרָה בֵּין שֶׁל דִּבְרֵיהֶם וּמִתְטַמְּאִין בְּמַשְׁקִין:
There are three types of sandals: a) those worn by humans; they are susceptible to midras impurity; b) metal shoes for animals; they are susceptible to the impurity associated with a human corpse; c) those made of cork or reeds; they are pure entirely. The general principle is: Any entity that is not fit to sit upon or to ride upon - or which could be used for those purposes, but was not made for those purposes, but for another reason - is not susceptible to midras impurity. If it was made for another purpose, but is also used for sitting, e.g., a cloak or a veil; it is susceptible to midras impurity. Whenever an article is susceptible to midras impurity; it is also susceptible to the impurity associated with a human corpse. There are, however, articles that are susceptible to the impurity associated with a human corpse, but are not susceptible to midras impurity, as we explained. Whenever an article is susceptible to the impurity associated with a human corpse; it is also susceptible to the other types of impurity, whether of Scriptural origin or of Rabbinic origin, and they are susceptible to impurity imparted by liquids.