On account of six cases of [tumah] un-certainty we burn terumah: on account of the [tumah] uncertainty of a beis hapras, and on account of the [tumah] uncertainty of earth which comes from the Land of the Nations, on account of the [tumah] uncer-tainty of garments of an am haaretz, on account of the [tumah] uncertainty of utensils that are found, on account of the [tu-mah] uncertainty of spittle that is found, [and] on account of the [tumah] uncertainty of human urine which is in proximity to animal urine. On account of definite contact [with these items] which constitutes a question of tumah, we burn terumah. R’ Yose says: Also on account of a questionable contact in a private domain. But the Sages say: In the private domain we suspend [terumah]; in the public domain it is tahor.

[Regarding] two saliva specimens, one of which is tamei and one of which is tahor, we sus-pend [terumah] on account of touch-ing [the saliva], carrying [it], or causing [it] to move in the private domain, and for contact in the public domain when [the saliva] is moist, and for carrying [it] whether it is moist or dry.  [If] there was a single [specimen of] saliva, and one touched it, carried it or moved it in the public domain, we burn terumah on its account, and needless to say [terumah is burned on its ac-count] in a private domain.

These are uncertainties that the Sages ruled tahor: an uncertainty regarding drawn water in a mikveh; an uncertainty of tumah floating on the surface of water; an uncertainty of [tumah concerning] beverages, with regard to ac-quiring tumah, [the uncer-tainty is deemed] tamei, whereas with regard to conveying tumah, [it is deemed] tahor; an uncertainty concerning [tumah of] hands, with regard to acquiring tumah, to conveying tumah, and to becoming tahor is [deemed] tahor; an uncertainty in a public domain; an uncertainty concerning Rabbinical edicts; an uncertainty pertaining to chullin; an uncertainty concerning sheratzim; an uncertainty concerning afflictions [of tzaraas]; an uncertainty concerning nezirus; an uncertainty concerning firstborns, and an uncertainty concerning sacrificial offerings.

An uncertainty [concerning] tumah which is floating on the surface of water [is ruled tahor], whether in containers or on the ground. R’ Shimon says: In containers [the uncertainty is deemed] tamei, but on the ground [it is deemed] tahor.  R’ Yehu-dah says: An uncertainty relating to one’s descent [into the water] is [ruled] tamei; an uncertainty relating to his ascent [from the water] is [ruled] tahor.  R’ Yose says: Even if there is no [space in the water for anything] more than the person’s bulk and the tumah, he is tahor.