שְׁנֵּים עָשָׂר סְפֵקוֹת טהֲרוּ חֲכָמִים וְאֵלּוּ הֵן. סְפֵק מַיִם שְׁאוּבִים לְמִקְוֶה. סְפֵק טֻמְאָה צָפָה עַל פְּנֵי הַמַּיִם. סְפֵק מַשְׁקִין לְטַמֵּא אֲחֵרִים. אֲבָל לְטֻמְאַת עַצְמָן טְמֵאִים מִסָּפֵק. סְפֵק הַיָּדַיִם בֵּין לְטֻמְאַת עַצְמָן בֵּין לְטַמֵּא אֲחֵרִים בֵּין לְטָהֳרַת יָדַיִם מִטֻּמְאָתָן. סְפֵק דִּבְרֵי סוֹפְרִים. סְפֵק הַחֻלִּין. סְפֵק קָרְבָּנוֹת. סְפֵק נְגָעִים. סָפֵק עוֹבֵר וְעוֹמֵד. סְפֵק שְׁרָצִים. סְפֵק רְשׁוּת הָרַבִּים. סְפֵק שְׁתֵּי רְשׁוּיוֹת:
Our Sages deemed that twelve questionable situations are deemed as pure: They are: a) A doubt concerning drawn water in a mikveh, b) a doubt concerning impurity floating on water, c) a doubt whether liquids imparted impurity to other entities; with regard to their own status, however, they are considered impure when a doubt arises, d) a doubt concerning the impurity of hands whether regarding the impurity of the hands themselves, such hands imparting impurity to other substances, or a doubt regarding the purification of such hands from this impurity, e) a doubt concerning impurity of Rabbinic origin, f) a doubt concerning ordinary food prepared with the stringencies of consecrated food, g) a doubt concerning sacrifices that are required to be brought, h) a doubt concerning tzara'at blemishes, i) a doubt when a person afflicted with tzara'at stood still or passed, j) a doubt concerning the carcass of a creeping animal, k) a doubt that arose in the public domain, l) a doubt concerning two domains.
