Reference for Kelim 30:3

כּוֹס שֶׁנִּפְגַּם רֻבּוֹ, טָהוֹר. נִפְגַּם בּוֹ שָׁלֹשׁ בְּרֻבּוֹ, טָהוֹר. רַבִּי שִׁמְעוֹן אוֹמֵר, אִם מְפַזֵּר הוּא אֶת רֹב הַמַּיִם, טָהוֹר. נִקַּב, וַעֲשָׂאוֹ בֵּין בְּבַעַץ בֵּין בְּזֶפֶת, טָהוֹר. רַבִּי יוֹסֵי אוֹמֵר, בְּבַעַץ, טָמֵא, וּבְזֶפֶת, טָהוֹר:

Regarding a cup, if the majority of it [i.e. of its circumference] has been damaged, it is pure. If it is damaged in three places extending over the majority of it, it is pure. Rabbi Shimon says: if it disperses the majority of the water [put into it], it is pure. If it was punctured and one fixed it, whether with tin or pitch, it is pure. Rabbi Yose says: if with tin it is [susceptible to being rendered] impure; and if with pitch, it is pure.

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