ד אִם לָשׁ אַחַר זְמַן אִסוּר חָמֵץ, אֵלּוּ הַמַּיִם עִם שְׁאַר הַמַּיִם שֶׁרוֹחֲצִים בָּהֶם הָעֲרֵבָה לֹא יִשְׁפְּכֵם אֶלָּא בִּמְקוֹם מִדְרוֹן, כְּדֵי שֶׁלֹּא יִתְקַבְּצוּ בְּמָקוֹם אֶחָד וְיַחְמִיץ. הַגָּה: וְהַכֵּלִים שֶׁמְּתַקְּנִים בָּהֶם הַמַּצּוֹת, וְהַסַּכִּין שֶׁחוֹתְכִין בּוֹ הָעִסָּה, יִגְרְרֵם תָּמִיד בִּשְׁעַת עֲשִׂיָהּ שֶׁלֹּא יִדְבַּק בָּהֶם הַבָּצֵק, וּלְאַחַר עֲשִׂיָהּ יְדִיחֵם וִינַגְּבֵם הֵיטֵב לַחֲזֹר וּלְתַקֵּן בָּהֶם פַּעַם שֵׁנִית (מַהֲרִי"ל) וְזֶהוּ עָדִיף טְפֵי מִמַּה שֶּׁנּוֹהֲגִין לְגָרְרָן, כִּי אִי אֶפְשָׁר לְנַקּוֹתָן הֵיטֵב עַל יְדֵי גְּרִירָה. וְהַמַּחְמִיר, יְגָרְרָן וְאַחַר כָּךְ יְדִיחָן (דִּבְרֵי עַצְמוֹ). וּבְיוֹם טוֹב מֻתָּר לַעֲשׂוֹתוֹ עַל יְדֵי אֵינוֹ יְהוּדִי, וְאִם אֵין אֵינוֹ יְהוּדִי יְטִילֵם לְצוֹנֵן אוֹ יִתְּנֵם לַתַּנּוּר שֶׁיֵּאָפֶה הַבָּצֵק שֶׁעֲלֵיהֶם. וְהָעֲרֵבוֹת שֶׁאֶפְשָׁר לָתֵת דָּבָר בְּתוֹכוֹ, מֻתָּר לְהָדִיחַ; וְכֵן כָּל כַּיּוֹצֵא בָּזֶה. וְיֵשׁ לִזָּהֵר בַּעֲרֵיבָה שֶׁלָּשִׁין בָּהּ שֶׁלֹּא יִהְיֶה בָּהּ שׁוּם גּוּמָא אוֹ סֶדֶק שֶׁלֹּא יוּכַל לְנַקְּרוֹ אַחַר הַלִּישָׁה וְתַחְמִיץ, וְאַחַר כָּךְ כְּשֶׁחוֹזֵר וְלָשׁ בּוֹ מִתְעָרֵב בַּבָּצֵק (מַהֲרִי"ל). וְלֹא יִתֵּן הָעֲרֵבָה עַל כַּר אוֹ כֶּסֶת צֶמֶר בִּשְׁעַת הַלִּישָׁה, שֶׁמְּחַמֵּם הָעֲרֵיבָה; אֲבָל עַל שֶׁל עוֹר, שָׁרֵי (מַהֲרִי"ו).
4 If [the dough] was kneaded after the beginning of when leaven becomes forbidden, the [hand cooling] waters along with other water used for washing the trough, one shouldn't spill them except in a sloped area so that they shouldn't accumulate in one place and leaven. Rema: and the vessels which one fixes for Matzo use, and the knife which one cuts the dough in portions should constantly be scraped at the time of production so that dough does not adhere to it. After, he should scrub them and dry them well, so that he may return and fix them for use a second time(MAHA"RIL). This is ideal compared to the practice of scraping it, for it's impossible to clean it well by scraping it. A strict person will scrape it and afterward will scrub it. (his own words). On Yom Tov, it's permitted for him to [clean them] via a gentile and if there is not a gentile, one should dispatch them to the cold or place them in the oven so the dough [on them] will bake. Troughs, where it's possible to put something inside them it's implied that it's permissible [to wash it] and other similar things. One should be cautious with a trough which one kneads in, that there shouldn't be any cracks or crevice which one will be unable to pick [all the dough out of] after kneading, and it will leaven and afterward when he returns to knead in the trough, it will mix with the dough(MAHA"RIL). one shouldn't place the trough on a pillow or wool cover when kneading, for it will heat the trough but on leather is permissible.