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הָיָה עוֹמֵד בִּפְנִים וּפָשַׁט יָדוֹ לַחוּץ וְטַבְּעוֹתָיו בְּיָדָיו, אִם שָׁהָה כְדֵי אֲכִילַת פְּרָס, טְמֵאוֹת. הָיָה עוֹמֵד בַּחוּץ וּפָשַׁט יָדוֹ לִפְנִים וְטַבְּעוֹתָיו בְּיָדָיו, רַבִּי יְהוּדָה מְטַמֵּא מִיָּד. וַחֲכָמִים אוֹמְרִים, עַד שֶׁיִּשְׁהֶה כְדֵי אֲכִילַת פְּרָס. אָמְרוּ לוֹ לְרַבִּי יְהוּדָה, מָה אִם בִּזְמַן שֶׁכָּל גּוּפוֹ טָמֵא, לֹא טִמֵּא אֶת מַה שֶּׁעָלָיו עַד שֶׁיִּשְׁהֶה כְדֵי אֲכִילַת פְּרָס, בִּזְמַן שֶׁאֵין כָּל גּוּפוֹ טָמֵא, אֵינוֹ דִין שֶׁלֹּא יְטַמֵּא אֶת מַה שֶּׁעָלָיו עַד שֶׁיִּשְׁהֶה כְדֵי אֲכִילַת פְּרָס:
Se era in piedi dentro e allungava la mano fuori e i suoi anelli erano nelle sue mani, se è rimasto lì abbastanza a lungo da mangiare mezza pagnotta di pane, sono impuri. Se stava in piedi fuori e allungava la mano dentro e i suoi anelli erano nelle sue mani, il rabbino Yehuda lo dichiara immediatamente impuro ma i Saggi dicono, fino a quando non rimane abbastanza a lungo da mangiare mezza pagnotta di pane. Dissero al rabbino Yehuda: "Se quando il suo intero corpo è impuro, le cose che sono su di lui diventano impure solo se rimane abbastanza a lungo da mangiare mezza pagnotta di pane, quando il suo intero corpo non è impuro, non dovrebbe certo ciò che è in lui non diventare impuro finché non rimane abbastanza a lungo da mangiare mezza pagnotta? "
Bartenura on Mishnah Negaim
English Explanation of Mishnah Negaim
If he was standing outside, stretching his hands inside, with his rings on his hands: Rabbi Judah says that they are unclean immediately, But the sages say: only after he leaves them there as much time as is required for the eating of half a loaf.
They said to Rabbi Judah: if when all his body is unclean he does not render that which is on him unclean unless he stayed there long enough to eat half a loaf, when all of his body is not unclean, is it not logical that he should not render that which is on him unclean unless he stayed there long enough to eat half a loaf?
Today's mishnah continues yesterday's topic: how long does it take for things which he wears to become impure in a house afflicted by a nega.
Section one: The person himself is impure immediately upon entering the house afflicted by the nega. The rings on his hands become impure even though they are outside the house. This is because his hands are part of his body and it is as if they are inside the house. However, the rings don't become impure until he stays in the house the amount of time it takes to eat half a loaf of bread. This is the same as the rule in yesterday's mishnah.
Section two: In this case he stands outside and remains pure (because his head and body didn't enter the house see mishnah 8), but he stretches his hands inside while wearing his rings. Rabbi Judah says that this is like the situation of simply bringing rings into a house. As we saw in yesterday's mishnah, in such a case, the rings are impure immediately.
The other rabbis hold that the rings must stay in the house for at least the length of time it takes to eat half a loaf of bread. They argue that in section one, where his entire body was impure, the rings had to stay on his fingers (although they were outside of the house) for at least that amount of time. All the more so, if his body remains pure, the rings must be in the house for at least the amount of time it takes to eat half of a loaf of bread.