Mishnah Machshirin 4:6: [If] a basket full of lupines was put into a Mikveh [ritual bath] one may reach his hand and take out the lupines from it [the basket] and they are [remain] pure [that is, not susceptible to impurity]. If he lifted them [the entire basket] from the water those that touch the basket are impure [subject to impurity] and all the rest of the lupines are pure. [If] a radish is in a cave, a Niddah [a woman who has menstruated and is thereby impure] may wash it and it [remains] pure. [If] she raised it out of the water at all it is impure.

קֻפָּה שֶׁהִיא מְלֵאָה תֻרְמוֹסִין וּנְתָנוּהָ לְתוֹךְ מִקְוֶה, מוֹשִׁיט יָדוֹ וְנוֹטֵל תֻּרְמוֹסִין מִתּוֹכָהּ, וְהֵם טְהוֹרִים. הֶעֱלָם מִן הַמַּיִם, הַנּוֹגְעִים בַּקֻּפָּה, טְמֵאִים, וּשְׁאָר כָּל הַתֻּרְמוֹסִים, טְהוֹרִים. צְנוֹן שֶׁבַּמְּעָרָה, נִדָּה מְדִיחָתוֹ וְהוּא טָהוֹר. הֶעֱלַתּוּ כָל שֶׁהוּא מִן הַמַּיִם, טָמֵא:

Mishnah Machshirin 4:7: [If] fruit fell into a water channel [and] an individual with impure hands reached his hands out and took them, his hands are pure and the fruit is pure. And if he intended [by his action] to wash his hands, his hands are pure and the fruit achieves BeKhi Yutan.

פֵּרוֹת שֶׁנָּפְלוּ לְתוֹךְ אַמַּת הַמַּיִם, פָּשַׁט מִי שֶׁהָיוּ יָדָיו טְמֵאוֹת וּנְטָלָן, יָדָיו טְהוֹרוֹת וְהַפֵּרוֹת טְהוֹרִים. וְאִם חָשַׁב שֶׁיּוּדְחוּ יָדָיו, יָדָיו טְהוֹרוֹת וְהַפֵּרוֹת בְּכִי יֻתַּן: